Importing attached model project set, the VDB should end up with an Error problem marker associated with same named models in VDB (Books.xmi and Books.xsd). Because the old .project doesn't have the following build command, the VDB is not validated and the error isn't created:

		<buildCommand>
			<name>org.teiid.designer.vdb.ui.vdbBuilder</name>
			<arguments>
			</arguments>
		</buildCommand>

Need a check and maybe a validation error on the ".project" to detect the older project and a quick fix to update the .project to add the VDB builder entry.