Are you all able to delete muted takes (right click the comp clip and select Delete Muted takes on the pop - up menu)?
I am not. Just have to select every single lane and delete it.
I am curious about your way to make it right.

Tried it and found what you're asking about: the clips get deleted but the take lanes remain (empty).
I did find it was fast to delete each lane with the little 'X' button on the bottom left if that helps (so you don't have to select each track and delete, just click the button, it deletes the track and the next one below it pops into the same space so its 'X' is under the cursor for another click and delete.

There is a "Remove Empty Lanes" option too IIRC.

I think if you bounce everything all the muted tracks go away automatically.

Sort of reviving this.....this is a great feature but does not work for me either. What exactly is the "delete muted takes" for if it does not remove muted takes. For me it does not do anything including removing the audio from the lane but leaving the take (as mentioned above). thanks