Hi chepstow. To keep your old version around (for final backup, comparison runs, or whatever), reverse your process. I.e., (after you've exited Zorro) first copy the 1.30 folder to a new 1.32 folder, then second install 1.32 Zorro into the 1.32 folder.

If you're really curious, you can then also compare the folders to see which files the install updated, and confirm your strategies, Log files, etc. were not.

HTH.