I'd like to know how you can put footage in the wrong comp when there's only one comp visible in the project window.
Incidentally, you can't drag a layer from a comp into another one. You have to copy>paste. And to put more footage into a comp, you drag it FROM the project window into the comp.
Hi Nicholas Wilde,
Sorry for this issue. Did you ever find a solution? Please let us know if you have or if you still need help.