Do you have an email i can send my concerns to?

It looks like you’ve submitted this question twice in the QuickBooks Community forum. One of my colleagues has already replied to your original post. You can check out their response and join the conversation here: https://quickbooks.intuit.com/community/banking-4/what-happen-if-i-want-to-disconnect-a-linked-credit-card-account-in-quickbooks-online-and-connect-it-again-will-i-lose-previous-data-375128.
 

Feel free to reply if you have other concerns. I’m happy to help.