I have a handful of custom apron materials that I have created. I have noticed, in the last two releases or so, some of these materials will generate a legacy "myaddon_CVT_" folder containing .NNZ files. I have compared all of my .material files and cant find any structure changes between the older and newest materials in my package.
What could be causing this to happen? The materials do work fine, and as far as I know, these files are sometimes generated if someone references the material(s) in their own addon from my library package. Also, while adding a few new materials today, a CVT folder was created in my working directory as well. I haven't been able to reproduce what caused it to generate.