Continuing Backup Jobs after Migrating to Other OS?

Hmm I see, I misread your post earlier which is why I edited my question a bit (not sure if you have seen the edit yet)

For backing up, am I right to say that the only way is to reupload the data set after the OS change? I asked as I saw this from Changing source OS - #4 by John which sounded like what I hypothetically want to try

As for restoring, strangely enough all I needed to do was to copy the database and settings of the backup job from the Debian machine to the Windows machine, import this backup job, check that the location of the remote data destination is correct (or relocate it to a local HDD if I have already downloaded them) and then restore the files as per usual.