The TRADER_ID field mapping in the condition as if there are no Trader SOE ID in the ID field, the Remark from the Dealer (ID) instead of by Mapping, but if a Trader ID what SOE.
TRADER_ID in the mapping field condition as if no Trader SOE ID to the ID field in Remark Dealer (ID) represented by the Trader SOE ID Mapping, but if you do nothing.
The mapping field TRADER_ID in condition. If no Trader SOE ID in Remark to bring the ID from the field Dealer (ID) instead of by the Mapping but if there is Trader SOE ID to do.