Legacy OCR systems accumulate technical debt over time: hundreds of templates, fragile extraction rules, and mounting maintenance costs every time a supplier changes their invoice format. Migrating to AI-native IDP eliminates this debt — but migration requires planning to avoid disruption. This checklist guides the transition.
Pre-Migration Audit
Template Inventory
- List all active OCR templates currently in production
- Identify templates by document type and supplier
- Measure template accuracy and exception rates per template
- Identify templates that frequently break or require manual override
- Calculate total template maintenance time per month
Integration Mapping
- Document all systems receiving data from your current OCR platform
- Map field names and data formats required by each downstream system
- Identify any custom transformation logic applied to extracted data
- Note any ERP-specific formatting requirements (date formats, currency codes)
Vendor Selection for Migration
| Evaluation criterion | What to test |
|---|---|
| Accuracy on your documents | Run your 100 most common document types through the new system |
| Field mapping flexibility | Verify output can match your downstream system field names |
| Exception handling | Test with your most challenging documents |
| Migration support | Does vendor provide migration assistance? |
| Parallel running period | Can both systems run simultaneously during transition? |
Migration Execution Steps
Phase 1: High-Volume, Standard Documents First
Migrate your highest-volume, most standardized document types first. These typically show the largest accuracy improvements and fastest ROI. Unusual or low-volume document types can follow once the core migration is stable.
Phase 2: Parallel Running
Run both systems simultaneously for 2–4 weeks. Compare outputs for identical documents. Measure accuracy differences and exception rates. Build confidence before decommissioning the legacy system.
Phase 3: Legacy Decommission
Once AI IDP accuracy exceeds legacy OCR on all document types, decommission the legacy system. Archive templates for reference. Cancel template maintenance contracts. Redirect IT support resources.
Papirus.ai supports OCR migration projects with parallel running and accuracy comparison tooling. Schedule a migration consultation. Related: Invoice OCR vs IDP
