Broadcast metadata IE V-chip, Rating, custom schemas

I don't see any existing schema's that include this data, and if I create a custom schema, none of that data seems to come across during export to MXF.

This is mandatory data for broadcast in Canada, and we currently use other finishing solutions to accomplish this.  We end up rendering out of AME as a mezzanine file to be re-encoded in other software.  Not our desired workflow.

Surely I'm missing something.  Shouldn't Adobe be able to finish assets directly for broadcast?  How are others accomplishing this?

I've even gone down the road of using ffmpeg and exiftool to try to write the data required after the file as been encoded, but with little success.

Adobe chat "support" was, again, a waste of time and simply told me to file a feature request.

Before I do this---Premiere really can't accomplish this at the moment?

Really?  Chat support assures me that ACP members will be drawn to my post and provide the information Adobe simply doesn't have.