"I came looking to see if "Delete Hole" for midi tracks had been made to work in the last six months, and found your comment."Don't take my experience as the "norm". Probably I just wasn't doing it correctly.
Basically I just did a "save as" and "hacked" the timeline up manually.
Sometimes its easier, for me, to just be "bull headed".

Fortunately it was not a complicated project.
And it was midi and audio, if that makes any difference...
T