This question already has an answer here:
I wish to upgrade my OSX and am worried I lose my Adobe CS apps since they were issued by my (ex)college and i do not have the keys/seriel#'s
I didnt quite understand the answer given. Will a TM backup save all this apps/data so if my new osx gives me problems I can 'go back' and recover the previous osx and ALL my apps/data incl the Adobe stuff! ?