OpenRoads ConceptStation Merge Files

Hi there.

Is there a way to import designs from one .dgndb to another, or to merge linework from one ConceptStation design into another?  For instance, if I have two designers working in two different ConceptStation .dgndb files that have the same terrain (.3sm); one designer working on laying out mainline geometry, and the other designer working on a secondary roadway, is there not a way to import the design developed for the secondary roadway into the file with the mainline design?

Using the import tools on ConceptStation v. 10.00.11.32, it seems that only templates can be imported from one file to another.

Thanks,