I lost transactions from one of my cards how can I recover them?

Hello, jake-mizzou2015.

Let's work together and find those missing transactions in QuickBooks Self-Employed. 

Was the associated bank account connected in QuickBooks Self-Employed deleted or disconnected? Doing so will delete all categorized and uncategorized transactions. We're unable to recover and get them back to their original settings. 

What we can do is to either reconnect the bank account again or upload the transactions manually (if reconnecting does not re-import those old transactions). Check this article if you need help with the upload process: Add older transactions to QuickBooks Self-Employed. 

However if you haven't deleted the account, those transactions may have been filtered on the Transactions page. In this case, let's set the correct filter parameters such as the Type, Account, Date, and Tags on the Transactions page. 
 

After dealing with the missing transactions, do you need help preparing your estimated taxes for the upcoming tax season? We have an article to help you with the process of paying it: Pay federal estimated quarterly taxes in QuickBooks Self-Employed. 

If you have questions regarding your transactions, I'm happy to help you out again. Just lay down the details in your reply (you can also include other concerns you may have) and I'll get back to you as soon as possible.