I'm using auto data loader, and for some weird reason, once I'm upserting a child record into account using external Id, there some record that fails because: "Foreign key external ID: 040525479 not found for field External_Id__c in entity Account"
But here's the thing, the external Id presented on the file and on the system is without 0! For some reason, Data loader (Only the auto data loader using CMD - On the UI version it is OK) is adding 0 to 41 records in the CSV! (out of 1800)
Can you please help me?