I suggest you refer to the question asked in the original post, rather than
reply to my response and also try not to make gigantic mountains of
unnecessary work out of molehills.
I'm curious about your comments in the first sentence. Either you have
something seriously wrong with your system, or you don't have a clue what
you're talking about.
I regularly go back & forth between random points for various technical
reasons and have NEVER had a "at worst it never works" situation.
Next point, if you download & save a file, Restore does definitely NOT cause
you to lose that file - fact!