Sunroof seal, is it just glued on?

[ScottyWM]

I'm redoing my headliner and stuff, while removing the sunroof panels (double sunroof), I noticed the seal around it was loose in the corners. Looks like it could use replacing. Looks like the same seal is on the back of the front sunroof panel.

Is this just glued on? That's what it looks like to me. Anyone know what the deal is with this.

Here's what I'm talking about (yeah, my clearcoat is scratched all to hell...)