[Help] Strange problem

i added npc
and i added 2 Groups on npc 1st group i added 4 Tabs
i put on 1st group FB items on 4 tabs

and on 2nd group i added 3 tabs
i added weapons on 1st tab ,shields 2nd tab

but when i buy anyweapon , shield from 2nd group and teleport weapons or shield change to items on Tab4 on 1st Group i don't know why
i checked lines maybe hints to help me !