What "files" are you talking about?
Project files do not always carry forward, while data files (pictures, videos, etc) usually will carry forward
But, you really should ask in the forum(s) for the specific programs, since each program is different
If you start at the Forums Index http://forums.adobe.com/index.jspa
You will be able to select a forum for the specific Adobe product(s) you use
Click the "down arrow" symbol on the right (where it says ALL FORUMS) to open the drop down list and scroll