I may be attempting to erase my Mac and start over. I have some odd USB issue with my Line 6 Helix and I can't get the software to recognize my Helix. Long story short Line 6 can't help, their forums are confused and apple support said my last chance is to erase the Mac. Logic Pro is my only application of value. Since I bought it on the App Store, if I log in to a "new" wiped out Mac, will I be able to go to the App Store and download my Logic Pro x application again without it thinking I need to buy it again? Thanks.