Activity Group POP- RNI Interface

Does anyone know the answer to the following question?

I am using the Period of Performance AC10.6 at the Activity group level to stop PO's being set up against a project after a certain date but still allow all other transactions to go through against an activity. I have tested this scenario and everything seems to work. However, the only piece I am not sure of is if the RNI accrual would hit the activity. The RNI accrual has a PO R_System code and I was wondering if the RNI accrual would still hit the project as I would like it to? Unfortunately I have no way of testing this.