It would still be a good idea to see if you can get a known-good fileset from the manufacturer. Just because the HD check says the files are all back, does not guarantee they are all error free. Until you can do a file verify against a known good set, it wouldn't be wise to rely on that drive's software to produce valid science data.
Funny how people run high cost, essential old equipment like that, and don't bother to make a drive backup image.