My experience is with cargo and tailgate windows in wagons but I can not see why the procedure would not be the same. This is what I wrote up concerning my "roping in" experience:

Personally I find them easier to install than to remove. The gasket holds the glass and then the gasket forms a rubber seal on each side of the metal lip that protrudes all the way around the opening. Armoral can be helpful in this process when you want to make the rubber slippery to make it easier to remove/install.

Removal:
You need to peel the gasket down on the inside at one of corners. Seems the upper rear corner is the one I use. A couple of putty knives will serve you well. One that has an angle bent into it will come in handy. As you pull the gasket down and expose the metal lip insert a putty knife to keep the gasket from going back into place. Work your way down the length of the top of the window inserting stir sticks, putty knives, or what have you to keep the gasket out of place.

Go back to the original corner and work your way around the corner. Pull the gasket down and push it to the outside of the metal lip. Have your helper support the assembly but do not let them pull it. After the first corner is out go to the other end at the top and do the same thing.

Work your way down at both ends. Once you have the gasket more than half out at the ends you should find it quick and easy to push the rest of both ends out while your helper adds a little leverage by carefully pulling the glass away at the top and then lifting the assembly out of the opening.

Reinstall:
Talk to a good auto glass shop or an automotive paint supply house to get the correct adhesive for a rubber gasket/metal lip setup like the Volvo has. It is available in standard caulking gun tubes.

Purchase a spool of high quality nylon line. The smallest diameter available that is impossible to break by hand is a good standard.

Warm weather is a bonus as it makes the rubber more pliable and easier to slide into place. A bit of Armoral can help lube things a bit in cooler weather.

In the groove that the metal lip fits in you will need at least 2 complete loops of nylon cord. Install the glass in the gasket and then wrap the nylon cord around the perimeter of the gasket. Both ends of the cord should be positioned about at the middle of the bottom of the gasket.

Apply the adhesive to the outside of the metal lip.

Have your helper hold the gasket/glass assembly up to the opening while you work from inside the cargo area.

Make sure both ends of the cord are inside. Position the window, tipping the top back a bit. Get the metal lip started into the groove. Try to get as much of the bottom of the gasket in place over the lip as you can The ends of the cord should be positioned so they come out where the gasket is already in place.

Once you have as much of the bottom of the gasket in place as you can grasp the cord and wrap it around your hand so as to have a good grip on it.

As your helper pushed the window in you need to pull the cord into the cargo area. You will see the cord actually pull the gasket inside the car. Go slow and have the helper apply pressure as needed to help you in your effort.

Continue around the perimeter of the opening. After one complete revolution you will have the gasket in place. The second revolution of cord was to insure that it did not pull out during the install.

Randy