ManagedEntityWrapper wrap and deserialize with in-depth fields of Stateful Beans -------------------------------------------------------------------------------- Key: JBSEAM-4589 URL: https://issues.jboss.org/browse/JBSEAM-4589 Project: Seam 2 Issue Type: Bug Components: Core Affects Versions: 2.1.2.GA Reporter: Sebastien Boutte Attachments: JBSEAM-4375 and JBSEAM-4589.diff, ManagedEntityWrapper.diff As it is said in documentation (Part : EJB Passivation and the ManagedEntityInterceptor) ; seam is capable of passivate SMPC (EntityManager with @In) and reattach all instances loaded at activation. For simple fields (Entities, Lists, Maps ...) , it works perfectly. For user defined fields (Wrapper with entity object, or more complex structure), this is not the case and cause a lazy exception later after activation. In class ManagedEntityWrapper, methods wrap and deserialize are not able to do in depth operations.