[Glenn l Smith]

I think i have an idea what has caused it. I found the layers but they had been thrown wayy out of the composition window area on their own. Also they were kept in place with by tracking, but it seems that they no longer are.

I have tracked on another composition and it seems that it has overwritten the track on this composition?

Can you only track one composition per project or should it matter when it is done on different compositions but in the same project?