I noticed that CMP 2.0 getXYZ-methods like customer.getAccounts() return a Collection which does not use isIdentical() to test whether it contains some element. I.e. when you invoke customer.getAccounts().contains(myAccount); this does not work. It seems to me that the collection returned by Orion is as incompatible with EJB as is the Java Collections Framework. This raises the question: Should not Orion return a collection which is compatible with EJB? - After all, it is an EJB server, and a pretty good one too, I might add. Yours Randahl