In m,
Kurt Ullman typed:
I am changing the knobs and locks on the doors of my
house. The metal plate on the door jamb is screwed into
the jamb where you would expect it to be, but then wraps
around to the front of the jamb and is fastened beneath
the trim piece. The house is 22 y/o and this is original
equipment. Anyway to get that off w/o tearing off (and
probably tearing up) the trim?

If it's built properly and with expected methods, the trim comes off and
goes back on easily is standard OP. Trim applications are always made to
allow removal unless some newbie gets a brain-fart and fills it with so many
nails they can't safely be popped off. A wide pry-bar is usually all that's
needed; abt $10 US. Do some search engine looking.