Moving systems · 3 minute read

Move CRM with a rehearsal, not a leap of faith

Scope, sample, reconcile and plan a controlled switch. A practical migration checklist for a small mortgage firm.

The useful bit

Agree what will move and how you will prove it arrived correctly before setting a switch-over date.

Who this is for: Brokerage owners and operations leads comparing CRMs or planning a move. Agree any network or principal constraints before moving data.

Start with a real task

A fictional five-person brokerage wants to move from spreadsheets and a previous CRM. It first agrees which clients, cases, documents, tasks and histories are in scope. A source export is only the starting point: the team must check relationships, permissions and whether people can carry on serving clients.

A routine you can adapt

  1. Business owner with both suppliers

    Agree scope and responsibility

    List record types, volumes, formats, attachments and histories. Agree who can export, who may access the transfer, retention arrangements and what will remain in the old system. Confirm costs, exclusions and acceptance criteria in writing.

    Keep: An agreed scope, data map, access list and acceptance checklist.

  2. Migration lead and case users

    Rehearse with a representative sample

    Use an agreed secure test process with an appropriate sample. Include open and closed cases, multiple applicants, attachments and unusual statuses. Check whether the mappings preserve meaning; a matching record count does not prove the right document belongs to the right case.

    Keep: Sample selection, mapping decisions, defects and fixes.

  3. Migration lead; business owner signs off

    Reconcile and test access

    Compare agreed counts, totals and links with the source. Sample documents for readability and correct ownership. Test staff roles, task dates and client communication paths. Resolve discrepancies or explicitly record an accepted exclusion before proceeding.

    Keep: Reconciliation results, user checks, unresolved exceptions and sign-off.

  4. Business owner

    Plan the switch and recovery

    Agree a freeze window, final changes to transfer, client-service cover and a go/no-go decision. Define the trigger and process for recovery, including reconciling work done after the switch. Keep approved access to the source until retention and acceptance decisions are complete.

    Keep: Cutover plan, recovery procedure, support contacts and post-move checks.

Filled example · fictional data

A rehearsal acceptance log — illustrative numbers

A rehearsal acceptance log — illustrative numbers
CheckSource / targetFindingOwnerDecision
Sample cases10 / 10Counts match; relationships still need checkingMigration leadContinue detailed checks
Documents30 / 29One attachment missingSupplier and case ownerDo not accept until resolved
Task dates12 / 12Two dates interpreted incorrectlyMigration leadCorrect mapping and repeat sample
Staff access3 roles testedOne role can see more than intendedBusiness ownerCorrect permissions before go-live

Write acceptance criteria before seeing the results. In this example, matching case counts do not outweigh a missing attachment or incorrect access. Repeat the affected checks after a fix and record who accepted the result.

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Take it into your next review

Start with the completed example, or use the blank version with your firm's own information. CSV files open in Excel and other spreadsheet apps. Store any live case data in your firm's approved location.

One next step

Put it to work

Prepare a list of your current systems, approximate volumes, export formats and must-keep histories. Use it to scope a migration conversation before choosing a date.

Discuss your migration scope

The product walkthrough illustrates the workflow. Your firm remains responsible for its advice, controls and decisions.

Further reading and editorial notes

Transition planning, responsibilities and evidence →

This article is an operational illustration, with fictional cases and figures. The linked reference guide contains the relevant primary-source links and scope notes. It does not replace current rules or advice specific to your firm.

What changed and who wrote it

Published 20 September 2026 by the Achos Editorial Team. Includes a worked routine, fictional example, editable templates and a product follow-through. This is an editorial resource; it has not been signed off by a named independent compliance reviewer.

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