Thank you. So in the flat brush category I tried:

Export Brushes > Export Current Category > *saved* > Import Brushes

And the manga hair brush did not come back. I did not see option for "restore".

I was trying to reset the manga hair brush to default (flat bristle brushes) and now it's gone from the list entirely. How can I get it back? I think I pushed either "reset current category" or "reset all brushes" and got a warning that all my brushes would be lost but I thought that just meant the ...