Hi, @scsmom. 

Let's resolve your historical transaction issues and move them to the new account.

You'll need to retrigger the income account line so the Also update this account in historical transactions option will appear in QBO. 

Here's how: 

1. Click the Gear icon at the top, then choose Product and Services. 
2. Locate the product or services item, then click the Edit button under Action. 
3. Choose other income or previous account from the drop-down. 
4. Hit Save. 
5. Go back and hit Edit again. 
6. Change the account back to the correct one. 
7. After changing, you can have the option to check the Also update this account in historical transactions. 
8. Hit Save. 

Once you're able to check the Also update this account in historical transactions, you can now move your historical transactions over to the new account. 

Please see the sample screenshots below for your reference: 

However, if the issue persists, I'd suggest doing primary troubleshooting steps to get rid of the error. Seldom cache saved up in the system can cause the product to misbehave. 

To start, access a private browser or incognito. This browser won't save your browsing history, cookies, and site data. 

Here are the keyboard shortcuts: 

• Ctrl+ Shift + N (Google Chrome)
• Ctrl + Shift + P (Mozilla Firefox)
• Command + Shift + N (Safari)

Once logged in, go back to the product and services page and check if the historical transaction option is already functioning well. If that works, go back to your default browser and initiate a clear cache to fix the unusual behavior. Here’s an article to help with the process: Clear cache and cookies to fix issues when using QuickBooks Online. Using another compatible browser is a good alternative too. 

I've attached an article about how to record historical vendor transactions, past sales, and accounts receivable in QBO. 

• Enter historical information

Let me know how it goes by clicking the Reply button below. I'm always here to help. Have a great day!