I know there’s a way to do this, I just can’t find it.
Copy a big chunk of sound from a long track. Select a shorter portion of a second track and Paste, but the paste cuts to the length of the second track selection. The length of the second track doesn’t change.
The phrase that pays: “Punch Copy Paste”
Also works the other way round:
Copy a short chunk of sound, select a longer portion of a second track and Paste, but the paste loops to the length of the second track selection.The length of the second track doesn’t change.
Perhaps “Paste Special” should be a built-in command rather than a plug-in? There do seem to be a lot of use cases where it is exceptionally useful.
Particularly the version that fades in the paste at both ends.