Message for <receive> activity is not needed anymore if we send a SOAP message for <receive> before <pick> activity

The structure of process:
<sequence>
<pick>
<receive>
</sequence>

Messages for <receive> and <pick> has to have same correlation IDs.

If we send message for <receive>, the riftsaw remember the message and after we send a message for <pick>, the process is completely performed.
I think this approach is right but the issue is that the riftsaw remember the message forever and if I send the message for <pick> once again with the same correlation ID, the process is completely performed without any needs of message for <receive> activity.