Yes, I know. But it works on AS 7, so I thought that it is somehow mocked. I have conversation-scoped entity manager. There is no problem to use it on AS 7, but on AS 4 it throws me "context not active" or something like that.
Everything is done a bit differently in the AS7 v. since we have some extra hooks to work with. We have a open issue on creating a common API for CDI Context control, but not done yet. Context activation/deactivation will be standarized in CDI 1.1.