Records converted from HireRight into Workday lose document expiration data. Workday won't send reverification reminders on converted records. Universities running migrations have documented this publicly — organizations are forced to maintain parallel legacy systems.
Every source system has migration quirks worth planning for
Most major HCMs and legacy I-9 platforms have documented export limitations — fields that don't transfer cleanly, formats that need translation, audit trails that require separate handling. Here's what to watch for.
SAP has announced end-of-maintenance for Onboarding 1.0 with forced migration to Onboarding 2.0. Active reverification tasks won't migrate — they must be completed in the legacy system first. Cross-module bugs between Employee Central and the I-9 form add remediation work.
ADP contracts often don't include data portability clauses — customers have "no clear exit path for acquiring full history." UKG's standard exports don't include I-9-specific endpoints. Both platforms typically require custom reports to pull historical I-9 records.
A company hiring since 1986 may have I-9s across eight or more form versions — each with different fields, different document lists, different acceptable formats. Cursive handwriting, coffee stains, faded carbon copies. OCR alone gets you 60–75% accuracy.




