How Treatment of duplicated identifiers in target works? I set it up "Reject entire import" But I see that List is getting updated? Can you please provide an example?
You can get a full breakdown of the List import process here: https://help.anaplan.com/anapedia/Content/Import_and_Export/Import_Data_into_Models/Import_Data_into_Lists.html
the parts you are referring to are 11 & 12