Today I selected a midi and audio track from bar 11-15. Chose Control-Alt-X, selected "Delete hole". It deleted the 4 bars and deleted the hole for the audio track, but for the midi track it only cut the 4 bars of midi info. I tried it a few times and also the midi track by itself with the same results. I have the latest version of Platinum
 
Any one else notice this?

It has never worked reliably for me. Thanks for pointing out it could be the midi track giving me problems.

Works for me, but the MIDI clip boundary isn't automatically trimmed to match the new end point of the data, which might give the impression that the hole wasn't closed. Right-click > Apply Trimming takes care of that.
 
EDIT: Looks like what you're seeing is a due to having Non-Destructive MIDI Editing enabled in Preferences. I generally keep it disabled, but always check it whenever I see unexpected behavior like this.

Sanderxpander
It has never worked reliably for me. Thanks for pointing out it could be the midi track giving me problems.

I've never seen this bug in Sonar Since the DOS days. It does this in X3 also. I wasn't able to use X1 or X3 and only started using Platinum for about a week or so, after a show stopper bug was fixed.  Delete Hole has always worked correctly for me in the past. Of course sometimes you have to check each track and make sure there aren't glitches from the delete, but that's really another area that's not a bug and is expected.

brundlefly
Works for me, but the MIDI clip boundary isn't automatically trimmed to match the new end point of the data, which might give the impression that the hole wasn't closed. Right-click > Apply Trimming takes care of that.
 
EDIT: Looks like what you're seeing is a due to having Non-Destructive MIDI Editing enabled in Preferences. I generally keep it disabled, but always check it whenever I see unexpected behavior like this.

I tried it also in X3. It was a short 2 bar clip. I selected a few notes in the staff view and chose Cut/delete hole and the hole wasn't deleted, but the notes were erased.
 
Thanks for mentioning Non-Destructive MIDI Editing enabled in Preferences. I wonder if that's it. I'll try that tomorrow morning. I sure hope that's it. Pretty soon you're going to train me and i"ll keep that unchecked. ha ha

Sorry, I should have been clearer. It has never worked for me reliably on the X series but I skipped X1 and only used X2 for a short while. Possibly it worked correctly there and I didn't notice. Since I couldn't get it to work whenever I wanted to I usually just do it manually on more complex projects. Sometimes you don't notice one track didn't shift 4 bars after a bunch of edits, I couldn't take the risk. I'll check out the non-destructive midi editing too. 

I did some checking. Delete hole last worked correctly with Non-Destructive MIDI Editing enabled in X2, and last worked correctly with NDME disabled in 8.5.3. But the disabled quirk is just with the MIDI clip not getting trimmed which is relatively minor and clearly the lesser of two weevils.

fwiw, cut special, with "delete hole" has worked reliably for me always.  using platinum.   Possibly because I never try to delete audio and midi at the same time?   I wish 'cut special' and 'copy special' were the default, but I've gotten used to finding the alt key every time.