I'm looking at buying a used MacBook Pro on that comes with Logic Pro X that's running Sierra.
However I need to roll it back to El Capitan so it will run my UA Apollo console software. It's not yet compatible with macOS Sierra.
My question is, since it's already on the computer, if I sign into my Apple ID before I roll back, will I then 'own' Logic Pro X so I can install it again after I reformat from the Mac App Store?