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Originally posted by: stonysmithRule #1: make a backup before trying any of the stuff below.
You should first test this with something you can afford to lose... just to make sure that it works.
During the installation, you can pick a new temp folder without hurting old temp files.
When you open a BRG, it's companion BRP file points to a BRS file. The BRS file has the file links to all the (old) temp files.
LAE 5.0 (should not) change any of those links just because you opened it in the new version.
Any NEW temp files will be placed in the new folder, but it should have no problem reading the OLD temp files.