[BRX]

Is your problem that MSP starts copying your files into the folder even if they are already there?

Yeah, that's a a bit annoying behaviour of MSP I've had trouble myself when I was setting up new PCs and transferring my files and database.

I'm not sure if it helps you because I don't know what you already have in the database. But here's what I did:

I backuped my database to a secure place. Also I put my source files in another directory (or just renamed it).

Then I installed MSP from scratch with an empty database. Only *then* I changed the data directory in the settings.

After that I copied the old database over the new empty one. Also I put the source files in the correct directory (or rather renamed the dir to the final data directory).

You have to set MSP up to your personal settings againg since those can't be backupped (for now) other than with a full backup with the MSP backup feature. But that's done quickly and you should have
a workable setup with your old files and the database in the root directory for the source files of your choosing.