There are some special case ignore lists in the IDL compatibility checker that we only needed for one time special case name changes or a one time validator change (example). For example, in this case, we added those fields to a list to allow for one specific validator change, but that means we also won’t check for any other validator changes on those fields in the future.

After SERVER-70963, we only run the IDL compatibility checker against lastLTS, lastContinuous, and latest, and some of these lists were added before the current lastLTS, so we should consider auditing/removing unnecessary lists, so that we can regain more compatibility checker coverage.