I use “The Core” as my Hotkey Profile and morph Hellbat is set to “I”. In the Hotkeys file it looks like this:
MorphToHellionTank/Hellion=I
But since Patch 5.0.14 this Hotkey does not work any more. I have to manually click the morph Hellbat Button. Setting this Hotkey to a different Button is a workaround for this issue. But this is not a solution for me, because I want to keep using my Hotkey profile.