Hi AmpFixer,
Sorry to hear that you're still fighting this issue.
You probably have already checked the following, but just double checking
When you add AD as a multi-track instrument - the 5th item should have been HiHat output.
and when you check it's assignment it should look something like this
(note the track #'s don't match the other images because this is a screen shot from different Sonar project)
With these settings (including having the output turned on in the AD plug-in GUI) you should you HiHat output
...Steven