hi Atrerios.
match framing from a timeline into the viewer will simply open a version of the clip.
it is quite alright to re-use it in the edit.
for what it's worth, if you have a copy of the logged clips in the browser,
you SHOULD be able to copy a sequence from one project to another and have a working master / affiliate relationship between timeline clips and browser clips.
if you bring a sequence into an empty project, then you can alway use Tools Menu > Create Master Clips to create a set of master clips.
might not be much use to you.
nick