Thank you Scott.

I managed to get my method to work, but yours works really well and is another way I wouldn't of thought of doing.

Thanks David.  This worked really well and I was able to call my record map and pass to a BP router.  

In the meantime I got my stream to work, but the EnsLib.RecordMap.Service.FTPService is more straightforward and will be supported in future upgrades.

I redid the indicies, however I found by trying to relabel properties the extended from the base HL7 searchtable class caused upset.

I got around this by replicating the class as  a new separate class.  This has worked well and rebuilding the indices allowed me to backwards index existing messages.