Drawing Models and a copies of the Profile Model reference

I have a Drawing Model of my road civil profile that I created with the Drawing Production Name Boundaries workflow.  I want to make a copy of the civil profile reference model inside of my Drawing Model for the purpose of merging the cached graphics, while also keeping the original civil profile reference model.

Unfortunately when I try to make this reference model copy, I get a error message stating "Cache not found".  This workflow works perfectly with Drawing Models from civil cross sections.

Is there a way to make a copy of the civil profile model reference file in the Drawing Model?

I am using ORD 2021 Update 10 R2.

Thanks