why external transaction NOT use the accounting date as the next open period when was reconciled

Summary:

why external transaction NOT use the accounting date as the next open period when was conciled

Now we have 4150 of external transactions was reconciled in diferents periods but when try to created accounted, the external accounting use the same period when the external was cleared or reconciled.

Need to use the next open period to account the external transaction

How to make of this happen