So I was wondering if Epic Augments and Stone of change rituals were compatible, meaning augmenting an epic item wouldn't remove its filled augment slots and vice versa.
I couldn't find information on the forums or the wiki.

The less risky way to test it was to do the Stone of Change ritual (Bind&Attune then Adamantine I) followed by an Augment crystal (Dex +6) on my Epic Antique Greataxe.

It worked:

I don't feel like testing the other way (augment then stone of change ritual).