Hi Dipak,
There is no propagation concept in SAP ECC instead it has extractors (EE, Control, Info, Tracking ID, Query, BO, Event Data, AOIS etc) which extracts data and send it to SAP EM system. However, there is no SAP EM update back to SAP ECC other than Acknowledge status update in table /SAPTRX/AOTREF or any specific design workflow to trigger/update process back to SAP ECC.
Regards
GGOPII