SWX 2017 SP5.0

So far today, 4 different file-sets (part/assy/dwg) have refused to save a couple of file properties.  Same properties in all files.

All files are checked-out to me.  I have linked the Part Code and Dimension Units fields to the appropriate drawing properties. Change the properties, and the sheet changes perfectly.

Until it's saved.

Once you save it, both fields become blank.  WTF?!  Must I use a static textbox for a "parametric" drawing?

Grrrr

How can I link the fields so they are not erased upon save?