@Jmoo You can add the export/import gltf format via the Workspace editor. To do this, you will need to install the Debug menu part of the Vectorworks Developer tools.
Here you have the instructions:
In Vectorworks, go to - Help menu>Install Partner Products> then Click on the Vectorworks Developer category>Debug Menu> Install and restart Vectorworks them
Go back to Vectorworks and click on Tools>Workspaces. I suggest creating a new Workspace, and under the Menu category, you can add these options to the workspace.
These options are part of the Design Suite workspace.
We conducted a test, and it worked really well.