PRO_MP_MASS Not Updating in Drawing

Hi all,

Attached is an image of the mass properties window that is accessed via File > Prepare > Model Properties > Mass Properties. My mass is showing incorrectly here, as well as in the drawing, (parameter PRO_MP_MASS). Essentially, PRO_MP_MASS is not updating at all.

I am calculating mass properties by regenerating (ctrl + g), and pressing calculate in the aforementioned window.

In the green box, it can be seen that the Mass parameter is not necessarily calculated, but looks like it is an input as it is not greyed out like the others. In my other assemblies, this Mass parameter IS greyed out, but it is not here, for some reason.

Yes, I have 'mass_property_calculate automatic' in my config.pro file. Yes, all of the subcomponents have materials specified, and have been regenerated/mass properties calculated, too. Yes, I looked on the forum for similar situations, to no avail.

Any ideas for fixing this? Thank you!