I am having trouble with getting painted materials to tag in plan/elevation view for objects that have been copy/monitored from a linked project.

We are linking the model from the base architects and copy/monitoring the demising walls and the floor slabs. I need to be able to add materiality to the floors and some of the walls so that we can tag these elements for our finish plans and elevations.

So far, I have successfully been able to use a split fact on the copy/monitored floors and apply the materials using the paint command. The materials are correctly scheduling in material take-offs but I am not able to apply a material tag in plan view.

Does anyone know what could be causing the problem getting the materials tagged?