Say I open a project, and Vegas can't find a video clip. It puts up the message that the clip can't be found, and gives me choices. Suppose I pick the choice that leaves the clip offline.

What I want to be able to do is to later get Vegas to make that offline clip online again. How do I get that "Can't find media" message back, short of closing Vegas and re-opening it?

Sorry if I'm overlooking something obvious here...