Sim disappears in CAS completely when equipping cc mesh

Hey! First of all if your base mesh have 3 meshgroups your mesh should have 3 of them too, you can import an one cut mesh into it cause it'll replace only one of them (explanation about cut numbers)
I changed cut number to 0000 and imported it to new package and it's working fine for me. Never use make blank for shadow and normal map, replace them with empty ones instead. Your mesh still have "cleavage" shape in place where it was before and as you changed shape of cleavage texture it's useless here, you should remove it. Also remove doubles and edge split where needed (where you want sharp edge, for example on dress bottom border). You should close hole of slit different way cause it moves weird while using sliders. I think you should retransfer uv_1 too, cause it does not suit actual slit part shape.