My question is how can I recover the files with extension .vir, that were moved to the so called AVAST MOVED FILE??? ???
If you want just the file, just rename it. The extension transformation to .vir is just to avoid to open or execute the file.
If you want to know the original place of the file, well, you should do the recommended action: Send to Chest. The moved folder does not keep track of the original file folder. The Chest keeps this info.