I had good luck with the "baggy" method also. I separated boxes of bags for dash, rear, engine comparment, etc, so I wasn't searching thru dozens of bags when it came to reassembly time. I found,however, that as the "freshening" process moved along I felt uncomfortable putting some of the old hardware back, so I put the new stuff in with the old. Ended up with a lot of baggies but a better looking car, I think.
Gordon