Can't delete source model which imports VDB

Source model that imports VDB can't be deleted.

Environment JBDS 7.0.0 GA
Tooling 4.1.3.Beta5 (http://download.jboss.org/jbosstools/updates/integration/kepler/integration-stack/aggregate/4.1.3.Beta5/)

Steps to reproduce:

1. Select File -> Import -> JDBC Database >> Source Model
2. Create connection profile for VDB (Select Teiid as Connection profile type)
3. Make sure that Import as VDB source model is checked
4. Create the source Model
5. Right-click on the source model and try to delete it, but Delete is inactive