CRM migration

Migrate from GBuilder to Nutshell

Field-level mapping, validation, and rollback between GBuilder and Nutshell. We move data and schema; workflows are rebuilt natively in Nutshell.

GBuilder logo

GBuilder

Source

Nutshell

Destination

Nutshell logo

Compatibility

100%

11 of 11

objects map 1:1 between GBuilder and Nutshell.

Complexity

BStandard

Timeline

24–72 hours

Rollback included Accuracy guarantee Field-level validation

Overview

What this migration involves

GBuilder and Nutshell differ significantly in data model structure and automation philosophy. GBuilder's custom fields require manual pre-creation in Nutshell before migration; Nutshell's custom fields live under Settings > Data > Custom Fields for People, Companies, and Leads. Nutshell's standard objects—People, Companies, Deals, Activities, and Notes—map directly from GBuilder equivalents, though GBuilder's pipeline stages need value-by-value mapping since stage names rarely align. Nutshell's export tools and JSON-RPC API handle incoming data; GBuilder's export path is typically CSV or direct database extraction. We sequence the migration: custom fields first (for planning), then People and Companies, then Deals, Activities, Notes, and Tasks. Owner resolution uses email match against Nutshell users. Activity timestamps and deal probability percentages preserve across both systems. Workflows, email sequences, and automation rules have no equivalent construct in Nutshell and must be rebuilt post-migration—FlitStack AI exports GBuilder configuration data as a rebuild reference for your team. During planning, FlitStack AI delivers a custom field pre-creation checklist and a value-mapping template to streamline field setup. The mapping specification is reviewed with your team before any data transfer begins, ensuring alignment and reducing risk.

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

GBuilder logo

GBuilder

What's pushing teams away

  • The user interface fails to present information clearly at each stage, overwhelming users instead of guiding them through workflows.
  • BIM process coordination with external software is difficult, creating friction for teams using multiple design tools on the same project.
  • Understanding and communicating project requirements is harder than expected, particularly for teams transitioning from simpler tools.

Choosing

Nutshell logo

Nutshell

What's pulling them in

  • Lowest cost entry point among mid-market CRMs—Foundation plan starts at $13/user/month, making it accessible for teams validating CRM fit before committing.
  • Integrated sales automation and email sequencing on Pro plans without requiring a separate email marketing platform, per verified Capterra reviews.
  • Consistently praised for intuitive interface and fast onboarding, with case studies reporting 100% team adoption rates within initial deployment periods.
  • Strong customer support responsiveness cited across G2 reviews, with dedicated support tiers available on Enterprise plans.
  • Native integrations with WhatsApp, Facebook Messenger, Instagram, and Slack reduce reliance on third-party middleware for common communication channels.

Object mapping

How GBuilder objects map to Nutshell

Each row shows how a GBuilder object lands in Nutshell, including any object-level transformations, lookup resolution, or schema-design dependencies.

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

GBuilder

GBuilder Contact

maps to

Nutshell

Nutshell Person

1:1
Fully supported

Direct field-level map. All standard person properties—name, email, phone, address—transfer to Nutshell Person. Owner assignment resolves via email match to Nutshell users; any unmatched owners are flagged before migration to prevent orphaned record assignments, and ensure data integrity throughout the process.

GBuilder

GBuilder Company

maps to

Nutshell

Nutshell Company

1:1
Fully supported

Direct field-level map. Company name, domain, industry, employee count, and annual revenue transfer to Nutshell Company. GBuilder's parent-child company hierarchies preserve via Nutshell's parent company lookup. Multi-company contact associations collapse to a primary company per person, for cleaner record management.

GBuilder

GBuilder Deal

maps to

Nutshell

Nutshell Deal

1:1
Fully supported

Direct field-level map. Deal name, amount, close date, and owner transfer to Nutshell Deal. GBuilder pipeline stages map to Nutshell stage IDs via value mapping—the actual stage names and probabilities are reconciled during the migration plan before the run commits.

GBuilder

GBuilder Pipeline

maps to

Nutshell

Nutshell Deal Pipeline

1:1
Fully supported

Pipeline structure transfers as a set of deal categories in Nutshell. GBuilder's stage-to-stage ordering preserves in Nutshell's stage configuration. Probability percentages transfer per stage or fall back to Nutshell defaults based on your approval during the mapping review phase, and validation.

GBuilder

GBuilder Lead

maps to

Nutshell

Nutshell Lead

1:1
Fully supported

Direct field-level map. Lead status and source information transfer via value mapping—GBuilder's status values map to Nutshell's lead status field. Open, Qualified, and Lost statuses align between systems; custom status values are preserved as custom field values for reference, in Nutshell.

GBuilder

GBuilder Activity

maps to

Nutshell

Nutshell Activity

1:1
Fully supported

GBuilder calls, emails, and meetings collapse into Nutshell's unified Activity object. Type, subject, date, duration, description, and linked Person or Deal transfer. Original timestamps and owner assignment preserve across both platforms, ensuring accurate history and accountability for each interaction throughout the migration process.

GBuilder

GBuilder Note

maps to

Nutshell

Nutshell Note

1:1
Fully supported

Note body transfers to Nutshell Note and attaches to the linked Person, Company, or Deal record. GBuilder's note creation timestamps and owner assignment preserve in Nutshell. Rich-text formatting in notes is preserved where GBuilder exports support it, for future reference.

GBuilder

GBuilder Task

maps to

Nutshell

Nutshell Task

1:1
Fully supported

Task subject, due date, completion status, and linked Person, Company, or Deal transfer to Nutshell Task. Completed/incomplete status maps directly. Task owners resolve via email match to Nutshell users just like Contact and Deal owners, ensuring accurate assignment and follow-up.

GBuilder

GBuilder Custom Field

maps to

Nutshell

Nutshell Custom Field

1:1
Fully supported

GBuilder custom fields require pre-creation as custom fields in Nutshell before migration. Nutshell stores custom fields under Settings > Data > Custom Fields for People, Companies, and Leads. Field type conversion applies: text fields map to Nutshell short text, pick-lists to Nutshell choices, dates to Nutshell date fields.

GBuilder

GBuilder Attachment

maps to

Nutshell

Nutshell File

1:1
Fully supported

File attachments associated with GBuilder records transfer to Nutshell Files. Each file re-uploads to Nutshell's file storage and links to the original record (Person, Company, or Deal). File size limits and inline image handling follow Nutshell's upload constraints, and compliance.

GBuilder

GBuilder Owner

maps to

Nutshell

Nutshell User

1:1
Fully supported

GBuilder owner records match to Nutshell users by email address. Email-match resolution links the owner ID to the corresponding Nutshell user record. Any owners without a matching email in Nutshell are flagged before migration so your team can create the user account or reassign records to a fallback owner.

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.

GBuilder logo

GBuilder gotchas

High

BIM model files are not exportable via API

Medium

Custom project properties vary by project

Low

Approval chain status fields are simplified on export

Nutshell logo

Nutshell gotchas

High

Contact tier limits enforced on import

Medium

No bulk API endpoint requires paginated extraction

Medium

Email sequences not exportable via API

Medium

Foundation plan disables key sales features

Pair-specific challenges

  • GBuilder custom fields require manual pre-creation in Nutshell

    GBuilder custom fields do not auto-create in Nutshell during migration. Your team must create each custom field manually under Settings > Data > Custom Fields before the migration run, matching the field type (text, pick-list, date, number) to prevent import failures. Multi-select pick-lists and rich-text fields in GBuilder may require format conversion before they map cleanly to Nutshell's custom field types. FlitStack AI can provide a custom field creation checklist during the planning phase—most teams complete custom field setup in 1–2 weeks before the migration window opens.

  • GBuilder has no public API on standard plans

    GBuilder's standard plans do not expose a documented REST or GraphQL API for automated data extraction. Migration relies on CSV export or direct database access where available. CSV exports introduce column-header mapping complexity: GBuilder's field names must be manually matched to Nutshell's import field labels before the data loads. If your GBuilder plan does not include bulk export, FlitStack AI coordinates manual data extraction and pre-migration formatting to ensure CSV columns align correctly with Nutshell's import expectations.

  • Email sequences and workflow automation have no direct equivalent in Nutshell

    GBuilder sequences, custom task automation, and lead routing logic built with custom fields or external tools cannot migrate directly into Nutshell. Nutshell's Pro plan includes personal email sequences and lead routing natively, but these are configured fresh—no automation state transfers from GBuilder. FlitStack AI exports GBuilder workflow definitions as a rebuild reference, but the sequence and automation rebuild happens post-migration. Budget 1–3 weeks for sequence and workflow reconstruction depending on complexity: small teams typically need 1 week; teams with complex routing or multi-step sequences need 2–4 weeks.

  • Orphaned records require post-migration reconciliation

    GBuilder records with incomplete associations—people without linked companies, deals without assigned contacts—arrive in Nutshell as orphaned records during migration. The migration tool links people to companies by email match and company name, but complex association logic or missing data in GBuilder can produce unlinked records that require manual cleanup. FlitStack AI runs reconciliation checks after migration to surface orphaned records. Your team can address them manually or add a post-migration cleanup step to the project scope.

  • Pipeline stage names and deal status values require value-by-value mapping

    GBuilder pipeline stages and deal status values do not map automatically to Nutshell stage names. Nutshell uses predefined stage categories (New, Pitched, Decision Maker Bought, Won, Lost) that may not match GBuilder's custom stage labels. Value mapping is done during the planning phase—FlitStack AI surfaces the full list of GBuilder stage names and probability percentages, your team approves the mapping to Nutshell stages, and the migration run applies the translation at import time. This step adds 1–2 days to the planning timeline but prevents deal status mismatches at go-live.

Migration approach

Six steps for a successful GBuilder to Nutshell data migration

  1. Audit GBuilder data and create Nutshell custom fields

    FlitStack AI extracts a full data inventory from GBuilder via CSV export or available API endpoints. We catalog all standard and custom fields, record counts per object, pipeline and stage configurations, and any custom logic or pick-list values. During this phase, your team creates the custom fields in Nutshell under Settings > Data > Custom Fields that correspond to GBuilder custom fields. FlitStack delivers a custom field creation checklist and a value-mapping template for pick-list fields. This phase typically takes 3–5 business days.

  2. Map fields, stages, and owner resolution rules

    With the custom fields created, FlitStack AI builds the field-level mapping specification covering all standard and custom fields. Pipeline stage names map to Nutshell stage IDs via value mapping. Owner resolution uses email match against Nutshell users—any owners without matching emails are flagged so your team can create Nutshell accounts or assign a fallback owner. A mapping review meeting validates the specification before any data moves. This phase typically takes 2–3 business days.

  3. Run a sample migration with field-level validation

    A representative slice of GBuilder data—typically 100–300 records spanning People, Companies, Deals, Activities, and Notes—migrates to Nutshell first. FlitStack AI generates a field-level diff comparing source values against the destination values so you can verify field mapping accuracy, stage translation, and owner resolution before the full run commits. Sample validation typically takes 1–2 business days. The diff report includes record counts, any mismatched values, and notes on fields that require manual review. This early validation reduces risk and ensures mapping alignment before the bulk migration begins.

  4. Execute full migration with delta-pickup window

    The full GBuilder dataset migrates to Nutshell using the approved mapping specification. A 24–48 hour delta-pickup window opens after the initial migration completes, capturing any records created or modified in GBuilder during the cutover period. Your team continues working in GBuilder throughout this window. Once the delta is applied and reconciled, FlitStack AI delivers a final reconciliation report. GBuilder access is revoked at your confirmation. Audit log and rollback capability remain available for 30 days post-migration.

  5. Rebuild email sequences and workflow automation

    With data confirmed in Nutshell, your team configures personal email sequences and any workflow automation using Nutshell's native tools (Pro plan). FlitStack AI exports GBuilder configuration data—including sequence logic, custom field automation rules, and lead routing definitions—as a rebuild reference document. This phase runs in parallel with the migration or immediately after, depending on your team's availability. Budget 1–4 weeks for full sequence and automation reconstruction.

Platform deep dives

Context on both ends of the pair

GBuilder logo

GBuilder

Source

Strengths

  • Manages large, complex engineering datasets across multiple concurrent projects without performance degradation.
  • Integrated scheduling tools tie work plans directly to project and contact records.
  • 24/7 support availability helps construction teams troubleshoot issues on live job sites.
  • Centralizes project budgets, timelines, and requirements to improve predictability.

Weaknesses

  • User interface complexity creates cognitive overload, particularly for users navigating stage-to-stage transitions.
  • BIM coordination with external software tools is limited, forcing teams to maintain parallel workflows.
  • Requirement documentation and communication features are harder to use than comparable tools.
  • Onboarding curve is steep for team members without construction-industry software experience.
Nutshell logo

Nutshell

Destination

Strengths

  • Simple, intuitive interface with minimal learning curve for sales teams new to CRM
  • Per-seat pricing is transparent and predictable, with annual billing reducing monthly cost
  • Full data export tool available for all account data including backups
  • Open JSON-RPC API allows programmatic access to all core objects
  • Native multichannel engagement (email, SMS, WhatsApp) without third-party add-ons for communication

Weaknesses

  • Reporting and analytics are considered weak, requiring manual Excel exports for detailed analysis
  • No bulk API endpoint—migration requires paginated API reads that must be rate-limited carefully
  • JSON-RPC API is less common than REST, requiring custom integration code compared to standard REST CRMs
  • Add-on costs (Forms, Nutshell IQ, Email Marketing) are per-company charges that stack on top of per-seat pricing
  • Feature restrictions on entry-level plans mean teams often need mid-tier to get basic automation

Complexity grading

How hard is this migration?

Standard CRM migration. 1 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 GBuilder and Nutshell.

  • Object compatibility

    B

    1 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

    GBuilder: Not publicly documented.

  • Data volume sensitivity

    B

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

Estimator

Estimate your GBuilder to Nutshell 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 GBuilder to Nutshell data migrations

Answers to the questions buyers ask most during GBuilder to Nutshell migration scoping. Not seeing yours? Book a call.

Can't find your answer?

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Book a free 30 minute consultation

The data migration itself completes in 24–72 hours for most GBuilder setups with under 5,000 records. The full project timeline—including custom field pre-creation in Nutshell, field mapping planning, sample migration, and delta pickup—extends to 5–10 days. GBuilder setups with 5,000+ records, heavy custom-field usage, or complex pipeline configurations push toward the upper end. The workflow and sequence rebuild phase runs post-migration and adds 1–4 weeks depending on automation complexity.

Adjacent paths

Related migrations to explore

Ready when you are

Move from GBuilder.
Land in Nutshell, intact.

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