Earlier versions of AS, allowed an extended persistence context (XPC) to propagate, even if no JTA transaction was active during use of the XPC. With the recent fix to AS7-1663, using an XPC outside of a JTA transaction and then invoking a transactional entity manager inside of a JTA transaction, will not propagate the XPC into the new transaction.

Add a domain default setting that allows the (not used in a JTA transaction) XPC to propagate into the new transaction (on behalf of a transactional entity manager). This will only happen if the XPC is active in the call stack.