How do I "unlink" or "make local" a created proxy? How can I remove a linked library that pertains to a created proxy without deleting or altering the proxy or proxy's data?

Using the "make local" function,L in object mode, simply unselects the selected proxy without making any changes.
As a workaround, one could save the proxy's associated data(Animation,Materials,etc) through fake users, then delete the associated linked library in the outliner, append the original object or armature the proxy came from, if the file is still available, and then reassociate the data.