We're sending DEBMAS messages from MDM to R/3, handled by function IDOC_INPUT_DEBITOR_MDM on the R/3 side. If changing a Business Partner (segment KNVP) in MDM, it does not get deleted in R/3, only added. Debugging IDOC_INPUT_DEBITOR_MDM shows that there's indeed no deletion of such segments; is this a bug or a "feature"?