Convert ABAP mapping to normal mapping??

Hi Experts,

We want to migrate ABAP mapping interface(.csv File to idoc(1:n)) to new PO 7.4 single stack from PI 7.11 dual stack.

We tried with RFC functional module but no luck.

Please suggest how can we over come this situation.

Below is the samle file which is getting from source

<?xml version="1.0" encoding="UTF-8"?><ns0:MT_FI_Documents xmlns:ns0="http://xxxx.com/source/PI/target/FI_AccDoc_xxxx"><FI_Documents><FI_Document><order_id>1783783,null,2014-10-14 03:33:53.0,PRE_PAID,ACTIVE,null,NEW,ACTIVE,27a5a9fec2644b73b036e86cde146368,2015-09-01 00:22:52.0,191044,3537355,477715,Anders,Widestrand,anders.widestrand@ockerobussarna.se,ckerbussarna AB,358867,Box 1031,CKER,null,47522,null,null,null,null,348383,Microsoft,Office 365 Small Business Premium,Small Business,RECURRING,MONTHLY,2015-09-01 00:00:00.0,2015-10-01 00:00:00.0,N,N,null,null,null,null,SEK,98.00,0.00,234274,41.65,53.9,2.45,98.00,0.425,0.55,0.025,98.00,ITEM,RECURRING</order_id></FI_Document></FI_Documents></ns0:MT_FI_Documents>