Well, yes. You can go back, even though we learned long ago that "You can't go home again", Thomas Wolfe may have fed us a little literary lie. ;-)
Again, yes, you can go back. But you also can go forwards too. There will be generally no problems in the path forwards. MathWorks always makes a great deal of effort to insure forward compatibility from one release to the next. I have upgraded MATLAB probably dozens of times, and used MATLAB on perhaps 8-10 different computers. I'm losing count over alll these years. But I've never had a problem in the process. Never.
I'd suggest you want to give yourself an easy out, so that you don't need to make the new computer work. Just don't give up at the slightest burp in the process.
Make sure you move ALL of your files in your search path to the new machine. Then add those directories to the search path, and save it. This will take probably all of a few minutes. Then in the new MATLAB, spend a little time making sure the preferences are as you wish. Again, 5 minutes.
