Hi, @khelshiwy-gmail-.
You'd be glad to know that the changes of your products or services are retroactive once you'll tick the box beside the Also update this account in the historical transactions section. I'll show you how.
- Look for the item from the Product and Services window.
- Click on Edit under action.
- Make the necessary changes to the account.
- Mark the box under Also update the account in historical transations.
- Hit Save and close.
This retroactive change will only take effect for your service and non-inventory items. For inventory types, the update will only work on your future transactions after the update. As a workaround, you can reset up the item, then recreate your past entries.
I'm adding this screenshot for your visual reference.
For additional tips about managing your products and services, check out these articles:
Moreover, you can also review the topics from our help articles for more hints and resources while working with QuickBooks in the future.
If you have any other follow-up questions about your products and services, please let me know by adding a comment below. I'm more than happy to help. Have a good one!