In certain scenarios the users may try to change the posting period of invoice. When they are editing the invoices, the saved invoice will be in same posting period as of the earlier one.
1.The invoice ,user trying to change the posting period is in pending approval status.
2.Please change its status to approved.
3.Now edit the approved invoice by changing the posting period and save.
4.The GL impact will be in the posting period not on the transaction date and make sure that the changing posting period is open.