Since I see no responses with a solution, I just want to add that I am looking for an answer to the same question. WD Support was not helpful, other than saying what I already knew - that the date was the date of backup. I was hoping the online community might have some sort of work-around, but apparently not? I agree - very limited use as a back-up drive, if unable to save my original modified dates; if only I had known! I read a lot of reviews before buying; interesting that none mentioned this issue. Hopefully there are drives out there that can do better?