Is this trim replaceable?
 

I tried to remove the remnants of some duct tape that was used after the left rear passenger window was broken with an adhesive remover and it melted the trim. :-(

Dealer says it's only available if I purchase the entire door panel; but I can find a used panel.

Question is, does anyone know if this trim is glued to the panel or attached by screws or some such from behind.

Image is before the damage

TIA