Merging files

[fireball3004]

I've started getting ready for the competition this year, nothing major just thinking over last year's problems. One problem I had that really bothered me was putting two files together. It worked for most of my files but files that included people threw me. Whenever I tried to import a person into the scene it would always look fine, but then as I moved the file up or down before dropping it the person got pulled and warped one way or another. I ended merging the files together without moving it, and then doing my best to move the person up into position. However another problem I encountered is that his biped continued to import incomplete. It was a real pain as it was never resolved, we did really poorly in large part because of it. In the second animation we just didn't have moving bipeds. Does anyone know what the problem is?