How do you guys utilize the Custom Properties in drawing files?

Is your PDM software set up to read those drawing custom properties?

Are they linked to part models somehow?

Mine look like this:

This makes it so the title block is automatically filled in, and lets us change the TB without editing the sheet format.  If there is a better way I'm all ears!

But these values are useless for being read into our PDM.  I feel like something needs to get read into PDM, ie at least a part number and description for the drawing.  I don't knoe how to get those from the part/model to the Drawing custom properties...