Adding or removing models from project does not update the project's preview VDB.

1) Importing first model and preview basically works
2) Importing a second model and attempting to preview does not add the second "importVdb" entry in the project VDB
3) Also noticed that deleting a model did NOT remove it's "importVdb" entry in the project VDB

Basically it's not responding to resource events and keeping the project VDB in sync with project models