I have a new Mac that uses macOS 15, I also have an older Mac that uses macOS 11. I've reset my old Mac and have a fresh install of macOS 11.
If I use Migration Assistant to transfer all my new Mac's settings and preferences into my old one, will it transfer all the files that can't be used on the older operating system?
Mac mini, macOS 15.3
The general usage for Migration Assistant is moving data from an older Mac to a newer operating system on a new Mac. If you have a Time Machine backup from Big Sur and it has not been overwritten by the new Mac, then I would recommend performing Migration Assistant on the Big Sur Mac with that specific Time Machine backup mounted there — not a migration from Sequoia (v15.*) back to the Big Sur Mac.
What do you mean by files it can’t use? If you mean applications, I wouldn’t transfer applications at all regardless of whether it can sort that out or not. Otherwise you’re just transferring your user account to the new Mac everything that was in it will be in the new account on the new Mac
Migration Assistant transfers files a Mac can't use?
