Error in Foreign Currency Revaluation

Dear Experts

Our open items as of period 10 which were cleared in Period 11, it's forex revaluation for Period 10 was posted.

Then when the items were cleared in Period 11, auto postings for forex difference was also posted.

Should system really needs to post the reversal entries had error for this case in Period 11?

I think those open items in previous period should not be cleared in the next period until the revaluation for previous period is posted. Can someone please clarify if its correct.

Regards

Vishal