Welcome to the QuickBooks Community, lorajanesvintagethings. Let me go ahead and assist you with your missing transactions.
When you first connect your bank, it can only download 90 days of transactions. However, it depends on the bank on how many days or months you can download.
One way we can correct this is to upload a CSV file coming from your bank. You can download the CSV file from your bank's website. Let me guide you through how to upload the file to QuickBooks Online.
Here's how:
Go to Bank transactions.
Select the link account drop-down and choose Upload a file.
Select or drop the CSV file.
Select Continue and follow the instructions on the screen.
QuickBooks Online only takes files in CSV, QFX, QBO, OFX, or TXT format.