Does anyone know of a simple way to track changes made to the Apply sublist on a credit memo/payment record? Line system notes seem to show only the Item's sublist and the old record/new record doesn't show anything either.

create an audit log custom record and capture desired changes there.

thanks for the idea. hopefully NS releases something easier that does require a custom record type just for tracking these

aye. NS does do pretty good audit logging imho but not perfect.