Calendar Secondary ledger vs Fiscal Primary Ledger

I'm wondering if anyone else has run into this problem.  We will occasionally have a user who will back date a transaction that causes the GL date to be in a closed secondary ledger period.  For example, we had a receipt entered after January 1 that someone back dated to December 24.  The problem here is that December 24 is in the January fiscal period for the primary ledger, but in the December calendar period for the secondary ledger.  The system allows this, but when the journal entry tries to post to the secondary ledger it fails, because the December