The linked listing now includes a synthetic delivery preview (invented data, not a client case). Both exports have 5 rows, but totals of 65.00 and 71.00. The example identifies missing and unexpected IDs, a duplicate, and a changed value, then explains the net +6.00. Duplicate IDs are flagged, not silently deleted. The service scope and price are unchanged.
The linked listing now includes a synthetic delivery preview (invented data, not a client case). Both exports have 5 rows, but totals of 65.00 and 71.00. The example identifies missing and unexpected IDs, a duplicate, and a changed value, then explains the net +6.00. Duplicate IDs are flagged, not silently deleted. The service scope and price are unchanged.