Thanks for coming back to this thread and sharing more insights about how this item change affected historical entries in QuickBooks, Karen.

I'm joining the thread to share some more insights about this topic.

Regarding the Audit Trail report, this can only display the modifications made to your transactions affecting your books during a specified accounting period. It also includes who made those changes.

The audit report in QuickBooks Desktop will not include any changes made to items. For now, there isn't any report available you can pull up item history after making changes.

Also, I've tried replicating the same scenario by creating bills and checks for a closed fiscal year and the current period. After that, I updated the cost of the items used, but it didn't affect those entries. What happened to your entries is an unexpected behavior in the program.

For this, we highly recommend contacting our technical support to help you correct your entries. They can check your company file and help explain further why this happened.

Here's how to contact us:

1. Open QuickBooks and click the Help menu.
2. Select QuickBooks Desktop Help.
3. On the pop-up screen select Contact us.
   
4. Click the Search for Something else button then type your concern in the Ask us anything box.
5. Hit Search then scroll down to get your contact options.

Additionally, if there is a backup copy of the company file prior to the changes, you can restore it. Please note that we only advise this if you have not create new transactions after changing the cost.

Please come back here after contacting our support. I want to ensure you're taken care of. I'm also here if you have other concerns about the program.