I have a project that i started in final cut express (interlaced only). The project is finished but i now have final cut pro and I want the video in progressive. How can i use final cut pro to change a project to progressevie that was once interlaced?

Why not just keep it interlaced until you output the master?

I used to do this all the time when I was shooting HDV I kept it interlaced and then did a pro res output in progressive.

I now shoot 1080i 25np so everything is progressive all the way through.