Small Fixes Lab

Migration review CSV workspace

Compare source and target.

Compare one field across source and target exports. Trace missing records, duplicate IDs and declared changes back to their rows.

Synthetic data. Eight comparison rows.
Source records connect to target records through an optional ID crosswalk. Values are compared as exact strings.
One entity type · One field pair · Exact strings
Comparison files and fields One source, one target, one field pair

Set up your comparison

Files are processed in this browser. Choose exports for the same entity type.

Use source_id and target_id columns when identifiers differ. Download the mapping example.

Identify records and choose the field to compare

Up to 1,000 rows combined, 2 MiB per file. A normalized CSV example is provided; native platform export compatibility has not been verified.

Comparison register

Inspect differences and their source evidence.

Choose files or try the synthetic example.

Your comparison starts here

Choose the two exports above, or open the example to inspect a difference and its source evidence.

Row references stay attached to every result.
Example files and mapping format

Source records · Target records · Mapping pairs

Choose one entity type and an identifier unique within it. Mapping pairs use source_id and target_id. Intentional differences need review against the agreed mapping; the tool does not decide accounting policy or whether a migration should be accepted.