Stephenesque

I have only just joined this forum, so forgive me for joining this discussion so late. I was not aware that one had to trash Aperture in order to keep it, so I simply upgraded from Mavericks to Yosemite, then, 12 months later, to El Capitan without doing anything with Aperture beforehand on either occasion. I still have Aperture 3.6 up and running.