1094-C HISTORICAL MIGRATION WORKSHEET
Old provider / new provider / reporting years / migration owner:
INVENTORY: artifact group / format / export owner / location / retrieval method / access test.
Include source snapshots; approved versions; sent files; receipts; acknowledgments; correction associations; open issues.
ENTITY CROSSWALK
Old employer key | historical reported identity | year | new employer key | current display label | mapping rationale
FICTIONAL EXAMPLE
CE-47 | Cedar East synthetic identity | 2025 | E-100 | Summit / Cedar East | same historical employer
CW-19 | Cedar West synthetic identity | 2025 | E-200 | Summit / Cedar West | same historical employer
Expected original identities: Cedar East 120 + Cedar West 80 = 200.
Expected correction events: 3, affecting 2 Cedar West original employees; do not add to original identity total.
SAMPLE RETRIEVAL
Historical authoritative transmittal / associated batches:
Twice-corrected record / original outcome / first correction / second correction / latest accepted version:
Missing evidence or unsupported prior-year operation / responsible provider:
RECONCILIATION
Employers / years / original identities / correction events / unresolved attempts:
Approved transformations / unexplained differences / reviewer:
CHANGEOVER
Archive retrieval proof / access roles / applicable retention decision:
Open issue / operational owner / next action / prior references:
Old access end date only after retrieval and responsibility checks: