Say, I have Project 1, and Project 2. After editing both, I want to combine the footage into a single new project. I found out that I couldn't just Copy the tracks from 2 and Paste it in 1.

Thanks,

Actually you can. Open Vegas TWICE, once for project 1 and once for project 2. Now select the events in project 2, copy, switch to project 1, and paste. Vegas must be open TWICE.

Alternately, start a new project, drag the project 1 VEG file to the timeline, and then drag the project 2 VEG file to the timeline. This will put both files back to back.

If you prefer, you could open project 1 and simply drag the project 2 VEG file to the end of the project 1 timeline.