T420 Touchpad

I'm replacing the palm rest on my old T420. The replacement did not include the touchpad, so I'm puzzling over how to remove the touchpad from the original palm rest.

I've removed the lateral metal retainer, the dedicated "mouse" buttons and the magnet, but the touchpad appears to be glued in place (as was the magnet). Can anyone confirm, or deny this?

If I gently twist the palm rest, the touchpad twists with it and I can't seem to pry it up ... although I am using an over-abundance of caution, because I don't want to wait for another month for a replacement, should I crack, or otherwise damage it.

Looking at the replacement palm rest, I don't see any provision for the touchpad to snap into place and / or for any other retention mechanism, apart from the aforementioned lateral metal retainer. Did Lenovo use some sort of adhesive, or "cellphone type" double faced tape to hold the touchpad in place?

Thanks in advance for any insights!