Multiperiod Accounting Journals

Hi

With Multiperiod Accouting deployed for prepaid invoices, how do you deal with future journal entries if the contract is terminated before the deferred period entered on the original invoice has expired.

I understand these SLA journals cannot be deleted and will get booked each month over the original deferred period until each journal is processed. I want avoid have to users having to post any manual journals.

How can they be offset? Is it possible to set up Credit Memo for MPA and offset for remaining period with a Credit Memo booked at same rate as original invoice rate?