Revenue accounting is hitting wrong account for a specific week timecards

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We have observed that, only for week ending 17th Feb-23, Revenue accounting is hitting wrong account (AAAA) for all subcontractor timecard transactions.

Before and after week of 17th Feb-23, Revenue accounting is hitting correct account (BBBB)

The journal rule for revenue account for timecard is to verify the Person account.natural account segment = XXXX, then assign BBBB, else assign AAAA

There is no change/update in the person default expense account for these persons around 17th Feb-23.

All these persons have Person account.natural account segment = XXXX

Only change is , We upgraded to 23A on 18th Feb-23.