Using ‘Openings (Doorway)’ for pass-thru openings, there are no trim assignments other than On/Off…which only effects the ‘door’ casing and not the ‘base’. Currently there is no base moulding if using openings for pass-through. Of course wall-ends have the same problem unfortunately.
In the attached image, being able to turn on/off both the casing and base would be a good fix, but ideally I’d like to control opening trim just like wall trim.