Whether or not an "entryPoint" is specified, the objects are added to the base ksession element.

I think the error is in a single point of the code of org.drools.command.runtime.rule.InsertElementsCommand, in the method execute()

As for now, the code looks like:

for ( Object object : objects ) {
handles.add( ksession.insert( object ) );
}

Simply replace "ksession" with "wmep", to have it look like:

for ( Object object : objects ) {
handles.add( wmep.insert( object ) );
}

Sorry that i can't send you a pull request