Vapok

    public class ExternalField : RedirectUrlPipelineExternalField
    {
        public const string NameAttributeLabel = "name";
        public const string CarryoverAttributeLabel = "carryover";
        public const string TypeAttributeLabel = "type";

        public override string Key { get; set; }
        public override string Value { get; set; }
        public override string KeyRef { get; set; }
        public override bool CarryoverValue { get; set; }

Vapok

/*
NOTE THAT THIS IS THE DECOMPILED ContactProcessingProvider

This is actually exposing a bug in the ContactProcessingProvider. 
The ContactProcessingProvider is used when a CSV File is uploaded through List Manager.  
The bug is that the MapContact() method is the meeting point between  the uploaded CSV data, 
and the existing contact record. Looking at the original method, you'll see that the existing 
contact information is completely disregard, and the contact template created from the CSV file 
is utilized. This overwrites any and all data in Mongo for that contact record, including 
OTHER facet fields that might have been previously populated, but not part of the CSV file.  

Vapok

[
  {
    "campaign_id": "1234",
    "contact_identifier": "1234",
    "email": "pnavarra65456@connectivedx.com",
    "email_address_history_entry_id": "1234",
    "event": "bounce",
    "instance_id": "1234",
    "ip": "167.89.106.58",
    "message_id": "1234",