Restricting access to specific accounts in specific scenarios

Hello

We have a set of cost recovery related accounts where the recoveries are calculated and captured centrally for budgeting purposes, but the actual recoveries are invoiced to the different entities and need to be captured at local source.

I'm trying to find a way to restrict write access to the recovery accounts in our budgeting and forecasting scenarios but allow write access to everyone for the actual scenario. 

Does anyone have any easy solutions on how to accomplish this?

Thanks