I called Barclay to let them know I was putting 1k on a Target for that day, they wrote in their note it would only be that day and it went through without any problems. I have since gone back and loaded 1k 3 more times without calling and its gone through fine. Same with the Amex, after approving the fraud notification from the $500 initial redcard load, I've loaded 1k a few times without any problems or needing to call them.