As I understand it from the manual, the act of merging a cab from a studio profile to a direct profile creates a "difference" between those two profiles, resulting in a separated cab preset and a merged profile, that is predestined to be used with Imprints or a guitar cab. AFAICT, if the maker of the merged profile forgets to name it so it is clear, it's a merged profile, nobody will ever know.
So my FR would be to display a small icon along with the resulting merged profile and the cab preset that makes it clear, that I'm dealing with a merged profile.
P.S.: is that information alreay part of the metadata of a profile?