You started a package from glasses that are made of two meshgroups: lenses and a frame. Your blend file contained only one meshgroup, which replaced only the frame, so the lenses stayed.
You need to start a package from, for example, earrings, import your blend there, re-categorize.
Unrelated to the problem, but this mask is not adapted correctly.
- select your mask, switch to Edit mode,
select everything with A;
- delete all vertex groups beside b__Head__. Click on Assign;
- expand Color attributes, delete an existing one, create a new one, naming it color0, setting up like in the pic, choosing 007F00 as a hex code;
- expand the rig, make head_2 selectable;
- select your mask, add Data transfer, choose head_2 as Source object;
- enable Face corner data, choose UVs and uv_1, then Nearest face interpolated;
- click on
Generate data layers, then on Apply
AHHHH you are an angel! thank you! I'm so new to this!
