I have a problem when returning to Vegas 7.0 to alter some scenes after rendering and testing out a DVD. Normally its not a problem but if I have not opened the project for awhile and I open it now it has all the video layers compressed into one and same with the audio? I hope this makes sense?

I'm opening the .veg file which I believe is the only Vegas file to open anyway. I'm confused...

Any ideas? Do I need to select something in the menu that opens up the various layers?

Thanks for any help.