Headliner install with glass in???

Looking to get a new headliner and vinyl top installed on my 68 Barracuda notchback and both places I have called so far say the glass needs to come out. Is this true or can the headliner be installed with the glass in :dontknow: Also I thought I remember hearing that they are not repopping the rubber trim for the glass. If that's the case then what the heck do I do ](*,)

Thanks
Derrick