Sorry, ive been dealing with life events and other stuff atm and haven't gotten around to this. The brushes themselves are just a single square that paints a pattern w. a transparent bg down, however your converting them is probably converting the actual brush shape but not the pattern that goes with it is what im imagining.
Viewing post in Glitch Pixel Brushes II comments
while i think that might also be doable with any plain square pixel brush, that's really cool and i never thought of that :O
i'll have to keep looking into a way to get these brushes to work the way they're "supposed" to because i'm still interested in seeing them in action, but this technique opens up a lot of stuff to me :D thank you!!