I have a very simple mogrt I've created. It's really just a placholder until I get the proper font, background etc. It's just one block of text that fades on. It's some random font (Calisto) which will do until I get the proper font. I've plopped this mogrt into my sequence multiple times, and edited the text on each one according to the edit's script. Nice.
Right - now I have the proper font. I've updated my mogrt comp in AE with the new font, and removed the font overrides that were previously switched on in the Essential Graphics panel (why is this still called Essential Graphics and not Graphics Templates?) in AE. I've exported the mogrt, hopped back to PPro, deleted the old mogrt from my Graphics Templates panel, and dragged in the new mogrt into the Graphics Templates panel. I then alt-dragged this new mogrt onto one of the old-style mogrts in my sequence, and said "yes, I DO want to update all occurrences of this mogrt in the project". Lo and behold......nothing. It's still the same old font.
As a test, I then changed the bg colour in AE, end re-exported the mogrt, deleted the old one from PPro's Graphics Templates panel, dragged in the new one, alt-dragged it to replace the old mogrt in the sequence...and the background has updated (on all occurrences) to the new colour. But it 's still the same old (wrong) font.
I then tried turning ON the font override options in AE's Essential Graphics panel, re-exporting etc etc, but it's STILL the same old (wrong) font. I've used this mogrt about 20x in my sequence, and would rather not have to go through every one and manually change the font to the proper one...isn't auto-updatery of this kind of thing exactly why mogrts were invented??!?!?!?!? Grrrrrr.
The comp I'm changing in AE is the ONLY comp in the ONLY AE project associated with this PPro project. I have not duplicated nor deleted any comp(s) in AE at all.