"So, Do you really want to cut the upper and lower
plates completely in two?"
You mean like cheap plumbers usually do and then let the floors sink
years later from all the joists and beams they cut apart?
Of course in this case, without actually seeing it, it's hard to tell
what the right or best way to do the job is. I wouldn't really object
to a chase unless it took up a significant portion of the closet space.
If it's cedar lined, then they would also have to re-install the