Glad you figured it out; sorry I wasn't able to participate in the discussion (thanks Oleg!).
For other readers of the thread, there is an alternative approach to reinstating the replyChannel header when using paired adapters explored in this sample: https://github.com/SpringSource/spri...rver-multiplex
This probably only a good solution for simple request/response applications, rather than multi-use as in the case of this thread.
Gary P. Russell
Spring Integration Team
SpringSource, a division of VMware