(SOLVED)Vertices Not Scaling In CAS But Look Fine In Blender

Hello. I'm new to Sims CC but not new to Blender (however since I model for 3D printing, it has been a VERY long time since I've had to rig something). I'm making my first CC item: A dress with a bow on the chest. The problem I'm having is that it looks fine in S4S and without any breast scaling in CAS, but as soon as you scale the sim's breasts up or down, 4 of the vertices do not want to move.

I can't replicate this problem in Blender; everything seems to scale fine. I think I did the uv_1 map right, but I'm not 100% sure because I've never made a Sims CC item before. Could someone please help? Thanks!

Also for some reason I can't figure out how to upload my package and blend files :( There doesn't seem to be a button to upload any files for me, and when I try dragging the files into the window, nothing happens.

EDIT: I am using S4S 3.2.1.2 for windows and Blender 3.6 LTS if that helps

EDIT 2: I just deleted the vertices and "remade" them. Wish I had done that in the first place. It seemed to fix that problem.