currently we need to do mirgration in c4c, there are a lot email conversation records need to be imported, we want to use datawork bench to import tickets and linked emails records, but when we import tickets , we found "Service_Request_BTD_Reference" which need "ID" field to mapping email and this ID return by Email Created and auto created by system, we can not get it except using ODATA Service to create, so is there any way to do this ?