CRM migration
Field-level mapping, validation, and rollback between Aderant Expert Sierra and Microsoft Dynamics 365 Sales . We move data and schema; workflows are rebuilt natively in Microsoft Dynamics 365 Sales .
Aderant Expert Sierra
Source
Microsoft Dynamics 365 Sales
Destination
Compatibility
12 of 12
objects map 1:1 between Aderant Expert Sierra and Microsoft Dynamics 365 Sales .
Complexity
BStandard
Timeline
3–5 days
Overview
Aderant Expert Sierra and Dynamics 365 Sales serve fundamentally different functions: Expert Sierra is a practice-management system for law firms handling client matters, billing, time tracking, and trust accounting, while Dynamics 365 Sales is a sales CRM focused on lead management, opportunity pipelines, and revenue tracking. The migration challenge is translating legal-specific constructs — matters, billing rates, time entries, and client hierarchies — into Dynamics 365's Account-Contact-Opportunity model. We extract data from Aderant via its API and database exports, transform matters into Opportunities (or custom Dataverse tables for firm-specific fields), map billing records to Invoice entities, and preserve time-entry history as Activity records. Legal workflows, billing rules, and trust accounting logic do not transfer and must be rebuilt using Dynamics 365 workflows or Power Automate. The migration carries all structured data — clients, matters, contacts, billing records, time entries, and documents — into a schema your Dynamics 365 administrator configures to match firm workflow requirements.
Every standard and custom field arrives verified.
AI proposes the map; you confirm before any record moves.
Parent–child, lookups, and ownership stay linked.
Calls, emails, meetings — with original timestamps.
Documents, uploads, and inline notes move with the record.
Source platform
Aderant Expert Sierra platform overview
Scorecard, SWOT, gotchas, and pricing for Aderant Expert Sierra.
Destination platform
Microsoft Dynamics 365 Sales platform overview
Scorecard, SWOT, gotchas, and pricing for Microsoft Dynamics 365 Sales .
Data migration guide
The complete Microsoft Dynamics 365 Sales migration guide
Data model, import mechanisms, field mapping strategy, pitfalls, and cutover — by the engineers running it.
Destination checklist
Microsoft Dynamics 365 Sales migration checklist
Pre- and post-cutover tasks for moving onto Microsoft Dynamics 365 Sales .
Why teams make this switch
Leaving
What's pushing teams away
Choosing
What's pulling them in
Object mapping
Each row shows how a Aderant Expert Sierra object lands in Microsoft Dynamics 365 Sales , including any object-level transformations, lookup resolution, or schema-design dependencies.
Typical mapping — final map is confirmed during the sample migration step.
Aderant Expert Sierra
Client
Microsoft Dynamics 365 Sales
Account
1:1Aderant clients map directly to Dynamics 365 Accounts. Client name becomes Account Name; billing address maps to Address fields. Expert Sierra clients without matter records become Accounts with no open opportunities. Parent-client hierarchies map to Parent Account lookup in Dynamics 365.
Aderant Expert Sierra
Matter
Microsoft Dynamics 365 Sales
Opportunity
1:1Each Expert Sierra matter maps to a Dynamics 365 Opportunity. Matter number is stored as a custom field (Matter_Number__c) for traceability. Matter description becomes Opportunity Name; responsible attorney becomes OwnerId via email match. Matter status (open/closed/archived) drives Opportunity State and StatusCode.
Aderant Expert Sierra
Contact
Microsoft Dynamics 365 Sales
Contact
1:1Aderant contact roles (responsible attorney, billing contact, referring attorney) map to Dynamics 365 Contact records. Contact name, email, phone, and address fields transfer directly. Multiple contact roles per matter create Contact-to-Opportunity associations via Opportunity Contact Role in Dynamics 365 and enable role-based reporting.
Aderant Expert Sierra
Bill/Invoice
Microsoft Dynamics 365 Sales
Invoice
1:1Aderant billing records become Dynamics 365 Invoice entities linked to the mapped Opportunity. Invoice number and invoice date map directly; billing amount becomes Invoice Total. Line items from Expert Sierra invoice details map to InvoiceDetail records in Dynamics 365 and preserve original billing period details.
Aderant Expert Sierra
Time Entry
Microsoft Dynamics 365 Sales
Task / Custom Activity
1:1Time entries attach to the mapped Matter-Opportunity. Original entry date, hours worked, description, and billing rate are preserved as custom fields on a TimeEntry__c Dataverse table. Attorney attribution stored via OwnerId. Billable vs. non-billable status maps to a custom picklist.
Aderant Expert Sierra
Expense Entry
Microsoft Dynamics 365 Sales
Custom Expense Entity
1:1Expense records require a custom Dataverse table (Expense__c) since Dynamics 365 has no native expense entity. Fields include expense date, amount, category, description, and matter link (Opportunity lookup). Expense status (submitted/approved/paid) maps to a custom picklist and supports expense reporting workflows.
Aderant Expert Sierra
Document / File Attachment
Microsoft Dynamics 365 Sales
SharePoint / Notes
1:1Expert Sierra documents attached to matters are exported and re-uploaded to Dynamics 365 SharePoint integration or stored as Notes with file attachments. Document name and original upload date are preserved. Large document volumes may require SharePoint document library mapping for compliance.
Aderant Expert Sierra
Trust Account
Microsoft Dynamics 365 Sales
Custom Financial Entity
1:1Trust account records have no direct Dynamics 365 equivalent. We create a TrustAccount__c custom Dataverse table capturing trust balance, client link (Account lookup), matter link (Opportunity lookup), and transaction history. Reconciliation status stored as a custom field and ensures audit readiness.
Aderant Expert Sierra
Billing Rate / Fee Schedule
Microsoft Dynamics 365 Sales
Product / Price List Item
1:1Expert Sierra per-attorney billing rates map to Dynamics 365 Product records or Price List Items. Each rate structure becomes a Product with a specific price. Linking rates to matters requires custom fields or integration with Dynamics 365's pricing engine for accurate billing.
Aderant Expert Sierra
Practice Group / Department
Microsoft Dynamics 365 Sales
Business Unit / Team
1:1Expert Sierra practice group assignments map to Dynamics 365 Business Units or Teams. Attorneys assigned to practice groups receive team membership in Dynamics 365, enabling practice-group-level reporting through security roles and team ownership which also supports resource allocation and workload distribution across the firm.
Aderant Expert Sierra
Client Hierarchy / Office Structure
Microsoft Dynamics 365 Sales
Parent Account
1:1Parent-client relationships in Expert Sierra map to Parent Account lookups in Dynamics 365. Office-level hierarchies become child Accounts under a parent firm Account, preserving organizational structure for multi-location law firms allowing consolidated reporting and simplified client management across all offices.
Aderant Expert Sierra
e-Billing Matters
Microsoft Dynamics 365 Sales
Custom Billing Setup Entity
1:1Expert Sierra e-billing matter setup (client billing codes, matter billing codes, approval workflows) requires a custom Dataverse table (EBillingSetup__c). These configurations do not migrate automatically and must be rebuilt in Dynamics 365 or referenced for manual reconfiguration to ensure accurate billing gateway connectivity.
| Aderant Expert Sierra | Microsoft Dynamics 365 Sales | Compatibility | |
|---|---|---|---|
| Client | Account1:1 | Fully supported | |
| Matter | Opportunity1:1 | Fully supported | |
| Contact | Contact1:1 | Fully supported | |
| Bill/Invoice | Invoice1:1 | Fully supported | |
| Time Entry | Task / Custom Activity1:1 | Fully supported | |
| Expense Entry | Custom Expense Entity1:1 | Fully supported | |
| Document / File Attachment | SharePoint / Notes1:1 | Fully supported | |
| Trust Account | Custom Financial Entity1:1 | Fully supported | |
| Billing Rate / Fee Schedule | Product / Price List Item1:1 | Fully supported | |
| Practice Group / Department | Business Unit / Team1:1 | Fully supported | |
| Client Hierarchy / Office Structure | Parent Account1:1 | Fully supported | |
| e-Billing Matters | Custom Billing Setup Entity1:1 | Fully supported |
Gotchas + challenges
Platform-specific issues from each side, plus the pair-specific challenges that don't show up on either platform's page on its own.
Aderant Expert Sierra gotchas
API rate limits are not publicly documented
Expert Sierra is cloud-only with no on-premises path
Custom field migration requires pre-migration field mapping
Implementation complexity drives long project timelines
Microsoft Dynamics 365 Sales gotchas
Professional tier 15-table custom table limit blocks migrations
October 2024 pricing increase applies at renewal for all customers
Custom fields must be created in the UI before API writes
Power Platform request limits apply to bulk migrations
Activity records orphaned to inactive owners fail silently
Pair-specific challenges
Migration approach
Discover Aderant schema and design Dynamics 365 custom-table architecture
We extract a full schema inventory from Aderant Expert Sierra — clients, matters, contacts, billing records, time entries, expenses, trust accounts, documents, and any custom fields. We cross-reference these against Dynamics 365's standard tables and identify which objects require custom Dataverse tables. If your setup exceeds Sales Professional's 15-table limit, we flag the licensing requirement and prioritize the most business-critical custom tables. We deliver a schema design document and field mapping specification for your Dynamics 365 admin to pre-create before data extraction begins.
Extract data from Aderant and resolve attorney-to-user mappings
We connect to Aderant Expert Sierra via API and database exports using administrator credentials. All structured records are extracted in a staging format. Simultaneously, we match Expert Sierra attorney IDs and responsible-party IDs to Dynamics 365 user accounts by email address. Unmatched attorneys are flagged for your team to either invite to Dynamics 365 or assign to a fallback owner. No record moves without a resolved owner; unresolved records are held in a quarantine list for manual assignment before migration commits.
Transform and validate data against field mapping specification
Extracted records are transformed to match the Dynamics 365 field schema — field names renamed, pick-list values mapped, date formats standardized, and lookup IDs resolved (Account must exist before Contact, Opportunity must exist before Invoice). We run a validation pass that checks required fields, field-length limits, and pick-list value coverage. Any records failing validation are corrected or quarantined with a correction report. A representative sample (typically 200–500 records spanning all object types) migrates first into a test Dynamics 365 environment for your team to verify data accuracy.
Run full migration with delta-pickup window
After sample validation sign-off, the full migration runs against your production Dynamics 365 environment. A delta-pickup window (typically 24–48 hours) opens simultaneously, capturing any new matters, billing records, or contact updates created in Expert Sierra during the cutover. We maintain a complete audit log of every record migrated — operation type, source record ID, destination record ID, and timestamp. If reconciliation reveals missing or misaligned records, one-click rollback reverts the migration batch so your team can correct and re-run without data corruption.
Post-migration verification and rebuild reference export
We generate a reconciliation report comparing record counts and field values between Aderant source and Dynamics 365 destination. Trust account balances, billing totals, and matter revenue figures are spot-checked against your Expert Sierra reports. We export all workflow definitions, automation rules, and e-billing configurations from Aderant as reference documents for your Dynamics 365 admin to rebuild in Power Automate or Dataverse workflows. Custom table formulas or calculated fields that cannot transfer are documented with the input fields required so your team can reconstruct them in Dynamics 365.
Platform deep dives
Aderant Expert Sierra
Source
Strengths
Weaknesses
Microsoft Dynamics 365 Sales
Destination
Strengths
Weaknesses
Complexity grading
Standard CRM migration. 2 of 8 objects need a mapping; the rest are 1:1.
Overall complexity
Standard migration
Derived from compatibility, mapping clarity, API constraints, and data volume across Aderant Expert Sierra and Microsoft Dynamics 365 Sales .
Object compatibility
2 of 8 objects need a mapping; the rest are 1:1.
Field mapping clarity
Field mapping is derived from defaults — final spec confirmed during the sample migration.
Timeline complexity
8-object category — typical timelines run 2–7 days end-to-end.
API constraints
Aderant Expert Sierra: Not publicly documented — Aderant enforces limits per API at its discretion and requires separate consent to exceed them.
Data volume sensitivity
Aderant Expert Sierra doesn't expose a bulk API — REST + parallelization used for high-volume runs.
Estimator
Rule-based pricing — no per-record fees, no manual quotes. Migrations over 2M records are scoped individually.
Step 1
Pick a category, then your source and destination platforms.
Category
FAQ
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