This is the reason that I manually install content. I have a folder in the characters library labeled "Hair," and one in the poses folder labeled Hair MAT Poses. Also, re-naming some of the folders to take out the "!!!" and the word "MAT" before the name of the mat folder. All my V4 characters are in a folder labeled V4 Characters which is in a folder labeled V4 that contains pose collection folders and morph folders. Always break out a package into it's parts so I can find them later on.

W10, Ryzen 5 1600x, 16Gb,RTX2060Super+GTX980, PP11, 11.3.740