If one is scheduled for landings recency on a reserve day, can you do an x-day swap to put an x-day onto the day that the recency sim was already placed on? (Assuming I do this action more than 72 hours prior to the affected day).

I know the pros/cons for doing this action, I’m just not sure if the system will allow it. I know that it will allow you to place a reserve day onto a scheduled 30-hour rest that covers an x-day, so the system does appear to occasionally allow some “unique” techniques.