FYI Capital One Banking won't transfer money to CMA

I have money in a Capital One 360 Savings account. A week ago I successfully transferred money from that account to my Fidelity cash management account. I initiated the transfer from the Capital One side.

This morning I attempted to do a similar transfer. After submitting on the Capital One website, I immediately got an email saying they cancelled the transfer and unlinked the external account. I called Capital One and they said on further review, they consider that UMB account to be an investment account and not a banking account. They will not allow the transfer. I had linked the account per Fidelity's instructions using UMB Bank n.a. as the name, checking as the type, and the routing number with the 17 digit account number.

EDIT: ok after reviewing past posts on this sub, I see that this is an issue that has been brought up before.

I don't doubt that people are able to push from the Capital One side even today. Like I said, it worked for me a week ago but did not today. It seems like it is done on an audit basis by Capital One. The last transfer was fairly large so I may triggered something. I posted this just to advise people to leave some time margin in case it doesn't go through. I have not tried to re-link my fidelity account on the Capital One website. I probably won't bother since you will probably have to re-verify those tiny transactions. So I don't know if its a permanent embargo for me.

I am also not attempting to criticize Fidelity here. I understand the constraints of the CMA and will continue to use the service because of the pros that it offers.