Why can't I see all my customers transactions from previous years?

Thanks for bringing this to us, @Dura Trailers.

Let's work together to bring back your customer transactions. Doing some troubleshooting steps can help eliminate any browser-related issues. 

We can open your account in a private or incognito window. This mode doesn't store any cache. You can use the keyboard shortcuts below: 

• Google Chrome: Ctrl + Shift + N

• Mozilla Firefox: Ctrl + Shift + P

• Safari: Command + Option + P

After logging in, go to the Customers page. If you see the transactions, let's go back to your regular browser and clear its cache. Clearing cache helps refresh your browser settings. Then, make sure to close and re-open your browser afterward. You can also try using a different supported browser.

Also, make sure to change the date range to the previous year.

I've added this link about memorizing and customizing reports in QuickBooks Online. It can help you filter the specific accounts that you want to see in the report:

• Memorise reports in QuickBooks Online

• Customise reports in QuickBooks Online

Please let me know if this helps you see the transactions in the report. I'll be around to help you until a solution is found.