Requirement is to change the dates for Reversal Journal Entries.
Dates of Reversal Journal Entries are dependent on their Parent Journal Entry containing the Reversal Date.
The Reversal Date field indicates the Transaction Date of the Reversal Journal Entries.
When creating automatic Reversing Entries from existing Journal Entries, it does not have the option to post on Adjusting Period.
If succeeding months have been Closed for the year and just left the Adjusting Period Open, normal behavior is that it will post to the next nearest open period other than the Adjusting Period. eg. December is Closed and November Journal Entry is set to reverse on December, it will be posted on January of next year and not on the Adjusting Period.
Since Reversal cannot be automatically post to Adjusting Period:
Open Journal Entry that needs to be reversed.
Click Actions drop-down > select Make Copy of the Journal Entry.
Reverse the entry by moving the debit amounts to credit, and the credit amounts to debit.
Set the Posting Period to the Adjusting Period.
Hence, we need to do the date adjustment manually by creating a reversal entry.