Hello there, rockfoundationtexas.

You can use the WebConnect feature to upload the missing transactions. First, you must download the transactions from your bank's website in a file that QuickBooks Online supports. Then, follow these steps to upload that file:

1. On the left panel, click Banking.
2. Click the drop-down arrow next to Update.
3. Choose File Upload.
4. Select the file, and click Browse.
5. Click Next.
6. Select the QuickBooks account, and click Next.
7. Map the columns, and click Next.
8. Select the transactions to import. and click Next.
9. Click Let's go!.

You can also check this article for more information: WebConnect.

Please let me know if you have any other questions. Thanks.