I don't think that will work anymore in Ty20.  Now it won't restore unless you have both the file and the corresponding .cache file. Just now I tried renaming both SMITH-JOHN.20i and SMITH-JOHN.20i.cache to SMITH-JOHNX, followed by a restore - and it just deleted the cache file.  It did not add SMITH-JOHNX to homebase.

Instead, I think you just have to rename SMITH-JOHNX and File->Open it. Then when you save the new .cache file is generated and it shows up in homebase.

If you want to do a bunch of these at once.. I'm not sure. I can ask and see what we can do.