Originally posted by Dice I'm running Aperture on High Sierra. No problems. Like you heavily invested. Though I have tried ON1 and Photos on a few photos to determine if I need to leave Aperture behind....so far answer is no.
That's good news,
Did you have to do anything to keep Photos from taking over when you updated?
I've currently got Photos, iPhoto and Aperture running on my iMac, I ported over the library to Photos when I upgraded to Yosemite(?), but kept the iPhoto/Aperture library that I do all my work in. I don't remember doing anything to keep iPhoto/Aperture going when I added Photos.
Appreciate you letting me know your experience,