When you import attached VDB to a project in TD, there will be a warning that "The VDB's model file "SourceModel" does not exist in the workspace.". After you try to apply quick fix, there is an exception(See screenshot).

Problem is that the model is in 2 folders (project/folder2/view/ViewModel.xmi). When you have a model that is directly in project folder or a model that is in one folder quick fix works.