Back up LCP & DNG Files -any reason to save jpgs?

Dear Lens Profile creators and users,
I am backing up my lcp lens profile files, my DNG image files of my targets that I shot for each file, and the folders which I downloaded from Adobe with the application, documentation, target files, etc.
Is there a reason that I should also back up my jpg versions of my DNG files? Is there any possibility in the future that I would need these jpgs for other needs in the Lens Profile creator tool software?
Thanks,
Debra

Thank you Simon, I had not even considered the possibility that I could want to fall back to jpg processing in the future and if so, would need those jpgs to process lens profiles for jpgs(as opposed to my raw profiles that I have already developed). I will also put the jpgs on dvd for saving,
Thank you for your reply, Debra

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