Do you have a very recent backup of the catalog just before you did the file move?
If you do, you could revert back to that 'backup' version of the catalog, your ratings would return, but your next hurdle would be to re-link the files in their new location on the other hard-drive.
Good suggestion... but unfortunately because the files had moved, the backup chucked a big fail and would only let me 'import' the files from the new location, so no joy.
It's not the end of the world, just annoying. I reckon it would be a useful setting to allow you to lock the ratings so they cant be reset on mass. Its very easy to do and I'm not the only one who's done it (I searched the problem and others have had the same problem).
Wonder if Adobe has a 'suggestion' box?
Even having moved the image files to another drive, you should have been able to relink your images that would appear as "Missing" when you opened the backup catalog. I am not sure what "chucked a big fail" means.
There is advice on re-linking missing images here- Lightroom catalog FAQ
See the last info at the bottom of this page.
It is almost never a good idea to import the images a second time, as you lose all work done editing, key-wording, rating, etc.
Thanks, will try again. It would save me a lot of time if I could re-link the images with ratings for sure.
"Chucked a big fail" .... means I probably did it wrong and it didn't work (so I blamed the software).
Cool thanks for that link!