A failed CRM data migration doesn't just cause headaches — it destroys customer records, corrupts revenue data, and can bring sales operations to a standstill. RASPSYS has managed 50+ successful migrations, and the difference every single time comes down to the same set of proven best practices.
Run a Pre-Migration Data Audit
Before a single record moves, RASPSYS conducts a comprehensive audit of your source data. We document every object, field, relationship, and data type that exists in your current CRM. You can't migrate what you don't fully understand — and most migration failures begin with assumptions, not actions.
The audit surfaces the ugly reality of most legacy CRM databases: incomplete records, inconsistent formatting, orphaned data with no active relationships, and fields that were never properly enforced. Knowing exactly what you're working with sets the foundation for everything that follows.
This phase also determines scope. Not all data needs to migrate. RASPSYS works with your team to define which records are active, which are archival, and which can be cleanly retired — reducing migration volume and risk before the project even begins.
- Inventory all source objects and field-level metadata
- Identify data ownership and stewardship gaps
- Flag records with missing required fields
- Document custom fields, picklist values, and lookup relationships
- Determine archive vs. active data split with stakeholders
See how RASPSYS audits your source data before migration →
Deduplicate and Cleanse Before You Move Anything
Migrating dirty data into a new CRM doesn't clean it — it just gives you a new system with old problems. Deduplication is not optional. It is the single highest-leverage step in any CRM data migration, and RASPSYS treats it as non-negotiable.
RASPSYS uses a combination of automated deduplication tooling and manual review for high-value records. We match on multiple identifiers — email, phone, company name, postal code — to surface true duplicates that a single-field match would miss. Merge rules are agreed upon with your team before we touch a single record.
Data cleansing goes further than removing duplicates. We standardise phone formats, normalise address fields, enforce picklist consistency, and correct obvious data-entry errors. The result is a clean, trustworthy dataset that actually improves your CRM experience on day one.
- Multi-field duplicate detection and merge logic
- Phone number and address field standardisation
- Picklist value normalisation across records
- Removal of test, sandbox, and placeholder records
- Validation rules enforcement prior to load
Learn how RASPSYS cleans your data before it moves →
Let RASPSYS Handle Your CRM Data Migration
50+ successful migrations across Salesforce, HubSpot, and enterprise CRM platforms. We protect your data — and your business — at every step.
Map Every Field with Precision
Field mapping is where migrations get technical — and where careless teams create irreversible data loss. RASPSYS builds a detailed field mapping document that connects every source field to its target equivalent, accounting for data type differences, character limits, and required transformations.
Not every field maps cleanly. A free-text "Status" field in your legacy system might need to become a controlled picklist in Salesforce. A combined "Full Name" field might need splitting into First Name and Last Name. RASPSYS handles every transformation explicitly — nothing is assumed, nothing is left to chance.
Field mapping documents are reviewed and signed off by your business stakeholders before migration begins. This creates accountability, prevents scope creep, and gives your team full visibility into exactly how their data will land in the new system.
- Source-to-target field mapping across all objects
- Data type conversion rules documented explicitly
- Text-to-picklist transformation logic
- Field splitting and concatenation rules
- Stakeholder sign-off before any load begins
Explore RASPSYS field mapping methodology →
Run Test Migrations — More Than Once
A single test migration is a minimum. RASPSYS runs iterative test migrations in a sandbox environment, reviewing results at each pass and refining the process before touching production. This is the safety net that prevents live-environment disasters.
Each test run validates load success rates, relationship integrity, and transformation accuracy. We check that parent records load before child records, that lookup fields resolve correctly, and that no records are silently dropped by validation rules in the target system. Every anomaly found in testing is a catastrophe avoided in production.
Test migrations also give your users a chance to review real data in the new CRM before go-live. Stakeholder UAT during the test phase consistently surfaces business logic issues that no technical specification could anticipate. RASPSYS builds this review time into every project plan.
- Iterative sandbox test runs with documented pass rates
- Parent-child relationship load order validation
- Lookup field resolution checks across all objects
- Validation rule conflict identification and resolution
- User acceptance testing with real migrated data
See how RASPSYS protects your production environment during migration →
Validate, Validate, Validate
Post-migration validation is not a courtesy check — it's a mandatory phase that RASPSYS treats with the same rigour as the migration itself. Record counts are reconciled, sample records are manually verified, and automated reconciliation scripts confirm that nothing was lost, corrupted, or miscategorised.
RASPSYS provides a written validation report at the close of every migration. This documents source counts vs. target counts by object, identifies any expected exclusions, and confirms business-critical fields for a statistically significant sample. Your leadership team gets full transparency — not just a verbal sign-off.
Validation doesn't end on go-live day. RASPSYS supports a hypercare period after every migration where we monitor for issues that only surface once real users interact with real data. If something surfaces, we fix it fast — because 50+ migrations have taught us that even the best-planned projects benefit from a safety net after launch.
- Source-to-target record count reconciliation
- Sample-based manual field verification
- Automated reconciliation scripts for critical objects
- Written validation report delivered to stakeholders
- Post-go-live hypercare monitoring period
- Rapid response resolution for post-launch data issues
Get your post-migration validation plan from RASPSYS →
Ready to Migrate Without the Risk?
RASPSYS delivers clean, validated CRM data migrations for businesses across the UK, US, UAE, Canada, and Australia. Every project follows the same proven process — and every client gets a migration they can trust from day one. Don't leave your CRM data to chance.