Can you upgrade from previously purchased older versions of Logic?

If by "upgrade" you mean getting the current Logic Pro app when you have, say, Logic 8 or 9 installed, then the answer is no. You still have to purchase the current Logic Pro app. And that means it's going to be an entirely new app installed. The problem with that is, of course, that the current version requires a Mac running macOS 11 or 12. And upgrading to one of these macOS versions will essentially make your legacy version of Logic redundant. But the good news is, the new app itself now costs considerably less than the legacy versions and packs more in terms of built-in instruments, FX and Apple Loops.

Log into the Mac App Store with the Apple ID you previously used to get Logic, click on the Purchases tab, and try downloading it; if Apple left an older version available, you'll be given the option of getting that.

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