IDoc -> XI -> IDoc Flat File

Hi Everyone:

We have a situation where we need to process an outbound IDoc through XI and create a flat IDoc file on a file server.

Everything works fine, but when file is created; it's in XML format. I have done the configuration in SXMB_ADM, so that it won't convert the IDoc to XML, but it still does i.e. segments and fields tags are added before and after the values. For example,

<Z1JBRS SEGMENT="1">

<CTEUSR>SOMEUSER</CTEUSR>

<CTEDTE>20000906</CTEDTE>

<CHEUSR>No User</CHEUSR>

<CHEDTE>00000000</CHEDTE>

<CHETME>000000</CHETME>

</Z1JBRS>

All I want is to create the same flat file that will get created if I use the "rfcexec"/"startrfc" criteria from SAP, which transfers the file to EDI Sub-System. Has anyone come across this situation? Any information / direction / suggestion will be appreciated.

Thanks,

JB