Hello I heard back from my excellent L2 support colleague who has tested the weld fix and he says that it works perfect when you append something like "?cid=100000" to the url but not if you append "?cid=" I debugged into the code and I believe that what is happening is that: AbstractConversationContext.initilize treats a null or an isEmpty() cid as as a trigger to enter the else block and call associateRequestWithNewConversation() However LazyHttpConversationContextImpl.checkContextInitialized() only calls fireInitEvent() for a null cid or in the catch block for a ConversationNotActiveException. The two methods have differing understandings of what's triggers a new conversation, so the "?cid=" case falls through the gap. I think this can be fixed by adding an "|| cid.isEmpty()" to LazyHttpConversationContextImpl.checkContextInitialized() above the non-catch block call to fireInitEvent(), if you agree I can spin up a couple of pull requests. Regards Benjamin Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU