Right transform results in editor error

Unable to find editor cell for the node returned as a result of right-transform: <no name>[extendedModule]. Seems like the node is invisible in editor. Node was created by RT: RTWrapper for +(class ....actions.QueriesGenerated$2)

This is the error message I get when I try to do a sidetransform on concept  "Module" to exchange it with concept "ExtendedModule".

The Concept of "ExtendedModule" extends the concept "Module"  and adds some functionality. An editor is defined for both concepts. When I exchange the nodes directly with an Intention everything works fine.

Any ideas?