The OnBase method of queuing outbound HL7 messages changed between version 7.2 and 8.0 of the Client. If the current version is older than 8.0, then this change must be accounted for. All activities that create or send outbound HL7 messages must be on the same side of this change (7.2 or earlier, 8.0 or later) as the sending client and should be upgraded at the same time.
It is recommended that all message queues be processed before the upgrade takes place. Plan your phased upgrade of HL7 messaging carefully while working with your tech support representative.
In OnBase 10.0 SP1 and later, there is a backward compatibility model for handing these situations. The command-line parameter -HL7AUTOSEND="MIXEDMODE" is used to activate it. Contact your support representative for more information.