How can I delete a Track?
First, make sure you don't have any Keyframes selected on the Track you want to remove - or only the Keyframes will be removed -, then select the Track you want to remove by clicking on it, and hit Backspace/Delete key on your keyboard.
Can I move or copy a Track to an other Composition?
Yes, by holding down the Alt key on one of the selected Tracks, and you can simply drag and drop selected Track(s) to an other Composition in the Compositions List. This action will move the Track to the other Composition.
If you want to do a copy, first you need to duplicate the Track (see the Project menu), then you drag and drop the copied Track to the other Composition.
Can I reorder Tracks?
Yes, by holding down the Alt key while dragging on selected Tracks.
How can I lock a Track?
You can lock selected Tracks with Project menu - Lock selected Tracks command. The selected Track(s) will turn into grey, all of the Track preferences and controls will be disabled, and the Bang button(s) of those Track(s) will turn into Unlock button(s).
Mute/Solo Track
You can mute a Track by turn off its 'power' button.
However, if you do a right-click on a that button, you will find a menu where you can select
- Solo
- Mute/Unmute All
Copy/Paste and Duplicate Tracks
To copy/paste Tracks within a project you just need to select the Tracks you want to copy - just the Track, not the Keyframes - then paste.
You can also duplicate from the Composition menu.