I am new to Adobe Premiere Pro CC 2014. The source pane is in such a state:
and when I want to mark a new in point for a new clip, it will be like
which will erase one of the clips:
How to exit this "edit mode"? Thank you.
Update: if I right-click the source pane, I can see the "Clear In", "Clear Out", and "Clear In and Out" are greyed out.