Fastback window...save gasket or just cut it?

I about got my 67 fastback all apart.Should I cut the gasket to take the window out or try to save it?Should I replace the gasket when I put it back together anyways?If so then cutting it would probably be the best way to go right?It would make getting the window out easier without breaking it I would think.I've taken a few Charger back windows out and one Charger front windshield by myself with good success but it was very difficult.What's your opinion?