Yes. It is possible to maintain the loan category as long as both loan categories have the same Process Type (E=Closed End, L= LOC, M=Mortgage etc). The maintenance screen also allows for the new category principal G/L which should be used to insure the loan category value is using the correct general ledger number for principal. The member's principal and accrued interest balances will be updated in the general ledger during end-of-day. Therefore, no manual journal entry is necessary.