Adding a fiscal period after close?

Just wondering if anybody has added a fiscal period, Period 13, after a fiscal year has ended. But not actually closed in FE.

Why? We have split a department and have to recast prior fiscal year for audit purposes. Trying to decide whether to just do it off FE or included an enter in Period 13 that does the reallocation between departments. We created a new ‘Operations’ department which combines expenses from administration and programs.

So the thought is to just do one massive entry in Period 13. So when we run FY22, March 31 we would update the report to include P13 in FY21.