Clearing salary encumbrances that remain after year-end cleanup

We are on HCM 9.2, PT 8.59

We use Commitment Accounting for HCM (payroll) and the end of our fiscal year (June 30) we run Fiscal Year End Encumbrance Cleanup (FYE_ENCUMBRANCE_CLEANUP) which is supposed to relieve all remaining salary encumbrances. That data is then transmitted to FMS via PAYGL03. The past few years we have had money left in various Business Units for various reasons, even after completing the cleanup process.

My question is do any of you experience that, and if so, do you have some way to liquidate them or do you just leave them? They still exist in both HCM and FMS and ideally I'd like a good way to get them both clean and synced.