An open credit memo should have been applied to a historical invoice from 2009. However, since this invoice is in history, we cannot apply that credit memo. If we issue a dummy invoice to apply the credit memo, then the expenses would be off balance. Is there some way to resolve this? If we perhaps remove transaction history for this one historical invoice, would we be able to move forward with a dummy invoice to close out the credit memo? How would removing transaction history affect the GL especially since this is for a closed year?