On relinking my account with my bank all my past transactions are now in my review listing and not in categorised has anyone else experienced this ?

Hello, splawford. 

Thank you for reaching out to the Community. To help you narrow down the cause of this unexpected behavior, I suggest logging into your QuickBooks account using a private browser or incognito. It could be due to the browser's full cache that causes QuickBooks to get this unusual behavior. 

To start, log into your QuickBooks account using a private browser/incognito. Here's how: 

• Press Ctrl+ Shift + N keys on your keyboard (Google Chrome).
• Press Ctrl+ Shift + P keys on your keyboard (Firefox or Internet Explorer).
• Press Control+ Option + P keys on your keyboard (Safari).   

If the private browsing session works, it means that you need to clear the browser's cache so the system can start fresh. You can also do this task on other supported, up-to-date browsers. Clearing the cache will refresh the system, and you'll be able to work with clean trash.     

If the same thing happens, I recommend reaching our customer support team. They'll be able to initiate a screen sharing session to take a closer look to moreover isolate this issue. 

Please check out this article on how to contact depending on what device you've used: Contact QuickBooks Online Support. 

You can check out this guide about Categorise and match online bank transactions in QuickBooks Online.

Keep me posted if you have any other concerns or questions. I’m here ready to assist further. Have a good one.