Hello @ez0es,
Welcome to the Community. I'm here to help you with your Banking concern in QuickBooks Online.
When you perform transfers between two accounts, the system should only show one entry in your Checking and one in the Savings account (see screenshot below). Transactions will not double unless another user creates another transfer.
![1.JPG 1.JPG](https://quickbooks.intuit.com/learn-support/image/serverpage/image-id/80042i1A6666D8707B11CB/image-size/large?v=v2&px=999)
If you've linked your bank accounts (Checking and Savings) in Banking, choose Match instead of Add when categorizing transactions. The Match option will link the downloaded data from your bank to the transfer recorded in QuickBooks. The Add option will create double entries if you already recorded one in the system.
Also, you can review any changes from other users by clicking the Gear icon and selecting Audit log under Tools. This section contains information on any changes to transactions or any new data entered into the system.
If you haven't found any issues, but the issue persists, the browser's stored cache may be full. It can cause unusual behavior, such as not being able to match transfers.
Start by logging into your account using a private browser. It doesn't store data in the cache and is a great way to isolate browser-related issues.
If you're using Mozilla Firefox or Microsoft Edge, press the CTRL + Shift + P shortcut on your keyboard. For Safari, hit Command + Shift + N. Press CTRL + Shift + N if you're using Google Chrome.
From there, go back and check if the issue continues. If it works, let's clear your browser's cache. If private browsing doesn't work, use another supported web engine.
I've attached a link you can use for additional guidance in categorizing bank transactions in QuickBooks: Categorize and match online bank transactions in QuickBooks Online.
Don't hesitate to reach out by clicking the Reply button if you have additional concerns about banking or reconciliation. Have a great day ahead.