Project Management migration

Migrate from Pegasus Systems to Microsoft Project

Field-level mapping, validation, and rollback between Pegasus Systems and Microsoft Project. We move data and schema; workflows are rebuilt natively in Microsoft Project.

Pegasus Systems logo

Pegasus Systems

Source

Microsoft Project

Destination

Microsoft Project logo

Compatibility

45%

5 of 11

objects map 1:1 between Pegasus Systems and Microsoft Project.

Complexity

BStandard

Timeline

3-5 weeks

Rollback included Accuracy guarantee Field-level validation

Overview

What this migration involves

Moving from Pegasus Systems to Microsoft Project is a shift from an agency-management platform with integrated finance, time tracking, and client billing to a dedicated scheduling and resource management tool. Pegasus holds Jobs, Clients, Timesheets, Expenses, Invoices, and Media Campaigns; Microsoft Project stores Projects, Tasks (WBS), Resources, Assignments, Baselines, and custom fields inside an MPP file or Project Online PWA database. The migration requires a schema decision upfront: whether active projects come in as MPP files for desktop use or as Project Online PWA projects for web collaboration, since the delivery format changes how we handle custom fields, resource pools, and baselines. Pegasus has no documented public API, so we extract from Pegasus's native Excel export templates, parse the structured output, and chunk it into Microsoft Project XML or CSV import format. Financial data (invoices, expenses, accounts payable) has no native home in Microsoft Project and is flagged for an external reporting or accounting tool rebuild. Workflows and billing automations in Pegasus do not migrate; we deliver a written inventory of these for the customer's project manager to recreate manually or via Power Automate.

Field-level fidelity

Every standard and custom field arrives verified.

Schema-aware mapping

AI proposes the map; you confirm before any record moves.

Relationships preserved

Parent–child, lookups, and ownership stay linked.

Full activity history

Calls, emails, meetings — with original timestamps.

Attachments & notes

Documents, uploads, and inline notes move with the record.

Why teams make this switch

Two sides of the same decision

Leaving

Pegasus Systems logo

Pegasus Systems

What's pushing teams away

  • Reporting is widely cited as inefficient and difficult to configure, making it hard to generate meaningful insights on team effectiveness and project hour allocation.
  • Limited public API documentation means agencies with custom integration needs hit a wall when trying to automate data extraction or sync with other systems.
  • Some users report the platform feels less suited to larger teams as agency headcount scales, with performance and feature gaps emerging on higher tiers.
  • The learning curve for non-finance staff on invoicing and billing modules creates friction during onboarding of new team members.

Choosing

Microsoft Project logo

Microsoft Project

What's pulling them in

  • Organizations already running Microsoft 365 and Azure AD adopt Microsoft PPM because it slots into existing identity, Teams, and SharePoint infrastructure without requiring a separate identity provider or SSO vendor.
  • Enterprise PMOs choose it for critical-path scheduling, baseline comparison, cross-project dependencies, and resource utilization reporting that standalone PM tools cannot replicate at this depth.
  • Project Online's integration with Power BI gives portfolio-level dashboards and cost-rollup reporting that satisfies executive governance requirements without third-party BI tooling.
  • Government, financial services, and healthcare organizations select it because FedRAMP, ISO 27001, and SOC 2 compliance certifications meet enterprise procurement requirements out of the box.
  • Large IT departments default to it as the market-leader in project portfolio management software, often driven by corporate licensing agreements that bundle it with other Microsoft 365 seats.

Object mapping

How Pegasus Systems objects map to Microsoft Project

Each row shows how a Pegasus Systems object lands in Microsoft Project, including any object-level transformations, lookup resolution, or schema-design dependencies.

Typical mapping — final map is confirmed during the sample migration step.

Pegasus Systems

Client

maps to

Microsoft Project

Custom Fields or SharePoint List

lossy
Fully supported

Pegasus Clients with contact information, campaign history, and performance analytics have no native equivalent in Microsoft Project. We map the primary client name and contact to a project-level custom field (Client Name, Client Contact) and store the full client record in a companion SharePoint List linked to the project site. If the destination is Project Online, the client metadata lives in a PWA enterprise custom field lookup table.

Pegasus Systems

Job

maps to

Microsoft Project

Project

1:1
Fully supported

Pegasus Jobs are the project-level container holding timelines, task lists, and resource allocation data. Each Job maps to a Microsoft Project file (MPP or PWA project). Pegasus job status, start date, finish date, and custom properties migrate to Project-level custom fields. We extract task lists from Pegasus and reconstruct them as a WBS hierarchy in Microsoft Project, with Pegasus task order preserved as WBS outline position.

Pegasus Systems

Job Task List

maps to

Microsoft Project

Task (WBS hierarchy)

1:many
Fully supported

Pegasus Jobs contain hierarchical task structures that map to Microsoft Project Tasks with a WBS outline. We parse the task hierarchy from the Pegasus export, set Task Name, Start, Finish, Duration, and Predecessors (where dependencies are expressed), and preserve the original Pegasus task order as WBS number. Task-level custom fields from Pegasus map to local Microsoft Project custom fields or enterprise custom fields depending on whether the destination is PWA.

Pegasus Systems

User / Owner

maps to

Microsoft Project

Resource

1:1
Fully supported

Pegasus Users and Owners with role information map to Microsoft Project Resources. We extract all distinct Pegasus users referenced on Jobs, Timesheets, and Expenses, create a Resource record for each, and set the Resource Type (Material or Work). Max Units are set to 100% for named resources unless Pegasus timesheet utilisation data indicates otherwise. Resource rates are populated from Pegasus user role data where available.

Pegasus Systems

Job Resource Allocation

maps to

Microsoft Project

Assignment

1:1
Fully supported

Pegasus Job resource allocation data maps to Microsoft Project Assignments. Each assignment links a Resource to a Task and carries Assignment Owner, percent allocation, and start/end dates. We compute Work (in hours) from Pegasus allocation percentages and project duration, and set Assignment Units to the Pegasus allocation fraction. Overtime work flags from Pegasus map to Assignment overtime fields where supported.

Pegasus Systems

Timesheet

maps to

Microsoft Project

Task Progress / Actual Work

lossy
Fully supported

Pegasus Timesheets with per-minute billable and non-billable flags have a structural mismatch in Microsoft Project. Project stores actual work against Assignments, not as a standalone timesheet object. We aggregate Pegasus timesheet entries by task and user, set Actual Work on Assignments, and mark the task Status Percent Complete from the aggregated timesheet data. Billable/non-billable flags are stored in custom fields. Note: Microsoft Project does not natively replace a timesheet approval workflow; Project Online requires a separate timesheet solution (Project Time or a third-party add-in).

Pegasus Systems

Expense

maps to

Microsoft Project

Task Cost / Custom Fields

lossy
Fully supported

Pegasus Expense records with vendor, amount, date, and job association have no native home in standard Microsoft Project. We map expense amounts to task-level Cost fields where a 1:1 expense-to-task relationship exists, and to project-level custom fields (Total Expenses, Budget Variance) for summary expense data. Full expense ledger with vendor detail is exported separately as a CSV for the customer to import into an accounting tool or Power BI.

Pegasus Systems

Invoice

maps to

Microsoft Project

Not migrated (finance gap)

lossy
Fully supported

Pegasus Invoices generated from job costs and timesheet data cannot migrate into Microsoft Project. Project has no invoice object. We extract invoice headers, line items, amounts, and payment status as a structured CSV export. The customer reconciles this with their new accounting or invoicing tool post-migration. Locked financial periods in Pegasus are flagged during scoping; we do not attempt to reopen or re-post to locked periods.

Pegasus Systems

Media Campaign

maps to

Microsoft Project

Project Custom Fields

1:1
Fully supported

Pegasus Media Campaigns aggregate campaign metadata, client meetings, and new projects. We extract campaign name, status, start/end dates, and key metadata as project-level custom fields in Microsoft Project. Live metrics from Pegasus are migrated as a static snapshot; real-time campaign analytics require a connector to the media platform (Google Ads, Meta Ads, etc.) that is outside Microsoft Project's native scope.

Pegasus Systems

Custom Fields (Job-level)

maps to

Microsoft Project

Custom Fields (Project or Task)

lossy
Fully supported

Pegasus custom fields on Jobs require explicit per-field mapping to Microsoft Project custom fields. We document all Pegasus custom field names, data types, and picklist values during discovery. Text fields map to Microsoft Project custom text fields; numeric fields map to cost or number fields; picklist values map to custom flag or text fields. For PWA destinations, we provision enterprise custom fields before migration. For MPP desktop destinations, we add local custom fields per project file.

Pegasus Systems

Attachment

maps to

Microsoft Project

Document (SharePoint / Project Site)

1:1
Fully supported

Documents and files attached to Pegasus Jobs, Clients, or Invoices are extracted as binary blobs or URLs. We preserve attachment associations by mapping each attachment to the corresponding document library in the destination SharePoint site (for Project Online) or a named folder alongside the MPP file (for desktop). Large binary blobs (>50MB) are skipped and listed in a gap report for manual handling.

Gotchas + challenges

What specifically takes care here

Platform-specific issues from each side, plus the pair-specific challenges that don't show up on either platform's page on its own.

Pegasus Systems logo

Pegasus Systems gotchas

High

No documented public API means bulk exports require workarounds

Medium

Reporting module defects cause visibility gaps in migrated data

Medium

Financial period locking may cause re-opening conflicts

Low

Change management scope creep can inflate migration timelines

Microsoft Project logo

Microsoft Project gotchas

High

Project for the web is being retired and merged into Microsoft Planner

Medium

Planner-tier portfolio features are incomplete despite Plan 5 labeling

Medium

Web app constraint controls are weaker than the Windows desktop client

High

Project requires a separate license not bundled with standard Microsoft 365

Medium

Project Online API is edition-gated and inconsistently documented

Pair-specific challenges

  • No documented public API on Pegasus means extraction relies on Excel templates

    Pegasus Systems does not publish a public REST or GraphQL API with documented endpoints. Bulk data extraction requires workarounds: we work with Pegasus's change management team directly to obtain data exports in their native format (Excel templates for timesheets, expenses, and forecasts), then parse and transform those exports into our migration pipeline. Any customer claiming they can pull the Pegasus API during scoping should be corrected early. We need to agree on the export method and obtain at least one test extract before migration scoping is finalised. This constraint adds two to five days to the discovery phase compared to platform pairs with documented APIs.

  • Microsoft Project has no financial or billing module

    Pegasus holds a full finance layer: Invoices, Expenses, AP/AR, billing tied to job cost centres, assets, and cash flow statements. Microsoft Project has no equivalent. Invoices and financial records do not migrate into Project. We extract these as structured CSV exports and flag them for the customer's accounting team to handle in a separate tool (QuickBooks, Xero, Dynamics 365 Business Central, or similar). Budget amounts can be entered as manual cost fields in Project, but Project does not track billing, payments, or outstanding receivables. Teams expecting their full Pegasus financial history in Microsoft Project will be disappointed; this gap must be communicated during scoping, not at delivery.

  • Pegasus timesheet data maps awkwardly to Microsoft Project actuals

    Pegasus tracks time at per-minute granularity with billable/non-billable flags across multiple projects. Microsoft Project stores actual work against Assignments, not as a standalone timesheet with approval workflows. We aggregate Pegasus timesheet data into Assignment Actual Work, but this flattens the approval state, the per-entry notes, and the billable/non-billable classification. Billable flags map to a custom field, not to a native Project concept. Project Online requires a separate timesheet solution (Microsoft Project Time or a third-party add-in) for ongoing time tracking post-migration. The historical timesheet data migrates as a data snapshot, not as a live timesheet system.

  • MPP file corruption risk on large or complex schedules

    Microsoft's own Q&A community documents MPP file corruption issues on complex schedules: tasks not honouring constraint dates, Earned Value BCWP showing zero, and files becoming unstable over time. We mitigate this by exporting migrated projects as XML (MSP XML schema), validating the XML structure before converting back to MPP format. For Project Online destinations, we import directly via the PWA REST API rather than throughMPP file upload. Customers with existing MPP files that are already corrupted may need to repair or rebuild those files before migration begins.

Migration approach

Six steps for a successful Pegasus Systems to Microsoft Project data migration

  1. Discovery and export method agreement

    We audit the Pegasus instance across Jobs, Clients, Users, Timesheets, Expenses, Invoices, Media Campaigns, and custom fields. Because Pegasus has no public API, we work with the customer to identify the correct export method: Pegasus Excel import templates for timesheet and forecast data, direct data extracts arranged through Pegasus's change management team, or CSV/manual exports. We document the full Pegasus schema, identify locked financial periods, and agree on the export method before migration scoping is finalised. We simultaneously confirm the Microsoft Project destination: desktop MPP files, Project Online PWA, or Project for the Web, since the destination format changes the import pipeline entirely.

  2. Destination setup and schema design

    For Project Online PWA destinations, we provision the PWA site, configure enterprise custom fields to match Pegasus custom field names and types, set up the resource pool (populated from Pegasus Users and Owners), and define the enterprise calendar. For desktop MPP destinations, we create a master project template with the required custom fields and calendar settings. We define the WBS mapping rule: how Pegasus task hierarchy translates into Microsoft Project outline levels, task names, durations, and predecessor links. We also flag the finance gap during this step and agree on the CSV export format for Invoices and Expenses.

  3. Data extraction and transformation pipeline

    We receive Pegasus data exports in their native format (Excel or CSV), parse the structured output, and run the transformation pipeline. Jobs become Projects; Pegasus task lists become WBS tasks; Pegasus Users and Owners become Resources; allocation percentages become Assignment Units. We aggregate timesheet entries by task and user and set Actual Work on Assignments. Expenses and budget data populate cost fields. The pipeline outputs Microsoft Project XML or CSV import files, plus a finance CSV for Invoices and Expenses. Each object emits a row-count report against the source extract for reconciliation.

  4. Sandbox migration and validation

    We run a full migration into a test environment: a test PWA site for Project Online destinations or a test folder for MPP desktop files. The customer's project manager validates record counts, spot-checks ten to twenty migrated projects against the Pegasus source, confirms that task hierarchy, durations, and resource assignments look correct, and reviews the WBS outline for accuracy. Any mapping corrections (custom field type mismatches, missing task hierarchy levels, incorrect resource assignments) happen in the transformation pipeline at this stage before production migration. Finance CSV exports are also validated for completeness.

  5. Production migration in dependency order

    We run production migration in record order: Resources (from Pegasus Users and Owners), then Projects (from Pegasus Jobs), then Tasks (WBS from Pegasus task lists), then Assignments (from Pegasus resource allocations), then Actuals (from Pegasus Timesheets). For Project Online, we use the PWA REST API with batch chunking and rate-limit handling. For desktop MPP, we import via the XML schema. Each phase emits a row-count reconciliation report. Locked financial period records from Pegasus are flagged and excluded from Project import; they appear only in the finance CSV export.

  6. Cutover, validation, and rebuild handoff

    We freeze Pegasus writes during cutover, run a final delta migration of any records modified during the migration window, then hand over the production Microsoft Project environment. We deliver the finance CSV export (Invoices, Expenses) and a written inventory of Pegasus Workflows, billing automations, and approval chains that require manual rebuild in Microsoft Project, Power Automate, or a separate accounting tool. We support a three-day hypercare window where we resolve any record-level reconciliation issues. We do not rebuild Pegasus automations as Power Automate flows inside the migration scope; that is a separate engagement.

Platform deep dives

Context on both ends of the pair

Pegasus Systems logo

Pegasus Systems

Source

Strengths

  • 100% cloud-based platform with no on-premise installations required across all tiers.
  • Per-minute time tracking across multiple projects with billable and non-billable flags for finance visibility.
  • AI-powered invoice and receipt scanning reduces Accounts Payable manual data entry overhead.
  • Unified interface across Job Management, Finance Management, and Media modules from a single browser.
  • Dedicated change management and staff training support available during migration and go-live.

Weaknesses

  • Reporting module is consistently flagged as inefficient and difficult to configure for team effectiveness analysis.
  • No publicly documented public API for programmatic data extraction or bulk export operations.
  • Limited published pricing information makes tier comparison and budget forecasting difficult for prospects.
  • Custom field handling requires manual field-level mapping for each migration, increasing scoping effort.
Microsoft Project logo

Microsoft Project

Destination

Strengths

  • Deep critical-path scheduling with baseline comparison and cross-project dependency tracking unmatched by lighter PM tools.
  • Native Azure AD authentication, Teams integration, and Power BI reporting sit on infrastructure enterprises already license and manage.
  • Enterprise governance controls including demand intake workflows, resource request approval, and portfolio-level capacity analysis.
  • Supports both Waterfall and Agile methodologies within the same project, accommodating hybrid delivery teams.
  • Scalable from Project Plan 1 for small teams to Project Server on-premises for regulated industries with strict data-sovereignty requirements.

Weaknesses

  • Ease-of-use scores trail the category average by a wide margin; onboarding friction frustrates new users consistently across G2 and Capterra reviews.
  • Pricing ranks 42nd of 49 tools in its category — the total cost of ownership including IT administration and training is rarely recovered for small or mid-market teams.
  • No built-in client portal, external stakeholder sharing, or proofing workflow, limiting use cases to internal PMO environments only.
  • The web interface (Project for the web / Planner Premium) has materially weaker constraint controls and resource auto-leveling than the Windows desktop client.
  • Project for the web is being consolidated into Microsoft Planner, creating uncertainty about which product tier will host project portfolio data long-term.

Complexity grading

How hard is this migration?

Standard Project Management migration. 2 of 8 objects need a mapping; the rest are 1:1.

B

Overall complexity

Standard migration

Derived from compatibility, mapping clarity, API constraints, and data volume across Pegasus Systems and Microsoft Project.

  • Object compatibility

    B

    2 of 8 objects need a mapping; the rest are 1:1.

  • Field mapping clarity

    C

    Field mapping is derived from defaults — final spec confirmed during the sample migration.

  • Timeline complexity

    B

    8-object category — typical timelines run 2–7 days end-to-end.

  • API constraints

    B

    Pegasus Systems: Not publicly documented.

  • Data volume sensitivity

    B

    Pegasus Systems doesn't expose a bulk API — REST + parallelization used for high-volume runs.

Estimator

Estimate your Pegasus Systems to Microsoft Project migration cost

Rule-based pricing — no per-record fees, no manual quotes. Migrations over 2M records are scoped individually.

Step 1

What are you migrating?

Pick a category, then your source and destination platforms.

Category

FAQ

Frequently asked questions about Pegasus Systems to Microsoft Project data migrations

Answers to the questions buyers ask most during Pegasus Systems to Microsoft Project migration scoping. Not seeing yours? Book a call.

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Migrations of up to 50 active projects with task, resource, and historical timesheet data land between three and five weeks and typically cost $4,500-$7,500. Migrations with large historical timesheet archives, complex multi-project resource pools, heavy custom field usage, or a Project Online PWA destination requiring enterprise custom field provisioning move to eight to fourteen weeks and $10,000-$18,000. The no-API extraction constraint on Pegasus adds two to five days of discovery time compared to migrations from platforms with documented APIs.

Adjacent paths

Related migrations to explore

Ready when you are

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