I was editing clips from a Nikon D4 camera in one timeline. I got through almost all and then when I truncated one, the audio below did not shorten. I thought it somehow became unlinked but the link and unlink menus are grayed out. All the audio tracks now show a cross hatching. They can't be moved, adjusted or deleted. This happened once before, and I think I deleted the whole audio track as unimportant. but don't want to in this video. What is going on?
Never mind. I see that the lock button somehow got pressed!