Reversal Journal Entry while Posting multiple lines are created with Different G/L Dates

Dear All,

I need advice or suggestion regarding the Reversal Journal Entry.

Client has entered Reversal Journal Entry with two lines in Dec month when they have posted the batch the reversal JE's are created with G/L Date Jan-20 4 lines and again with G/L date in Feb-20 2 lines are created.All the lines are created during R09801 report Batch post. Normally for Reversal JE when entered two lines after posting with next month G/L date 2 lines will be created.

I have tried to create this scenario PY but the same is not repeated.

Kindly advice how the issue has occurred what may be the reasons for this issue.