Hi @peterseamans,
We can manually update the connection between QuickBooks and your bank. This helps to download the missing transactions.
- Go to the Banking menu.
- Select the tile for the affected account.
- Click the Update button.
Also, another way to bring in those transactions is to manually upload them using a Webconnect file and download it from your bank's website.
Then, go back to Banking and select File upload to upload it. You can check this article for more detailed steps on how to achieve it: Manually upload transactions into QuickBooks Online.
Visit us again if you have more questions. Thanks for dropping by.