I am not using Dali in my project, however I wanted to generate some
entities out of database tables and created a new JPA project (let's call
it "JPAProject"). After generating the entities I copied them to my
existing project, and deleted JPA project.
Now some of the entities show an error "This mapped class is not specified
in persistence unit "JPAProject", even though JPAProject is long gone and
there should be no references to it anywhere.