Commitment Carryforward for Annual Budgets in MYB system

My client is activating Multi-year budgeting. With it on, you can no longer carry forward commitments at all - including for those Funds with Fund Types identified as "Annual". This causes a problem for those Annual Funds, which operate on an annual budgetary basis. For those Annual Funds, any commitments used in the new fiscal year must consume budget in the new year. How can we do this if commitment carryforward isn't allowed for all - including Annual Funds?