I appreciate you for joining this thread, AVarrone.

When you make an a value adjustment of the inventory it will not affect the previous month's transactions. Here's how to do it:

1. From the Lists menu, click Item List.
2. Locate the item.
3. Click the Item dropdown, then select Edit Item.
4. Update the price.
5. Select OK.

In addition to, you can run the Inventory Stock Status by Item report to pull the data of your inventories. Here's how to run the report:

1. Go to the Reports menu.
2. Choose Inventory.
3. Select the Inventory Stock Status by Item report.
4. Set the report date.
5. Click the Print button.

You can customize your inventory reports to focus on the details you needed the most. You can learn more about this through this article: Customize reports in QuickBooks Desktop.

I'm just around if you have other concerns or follow-up inquiries about reports. Keep safe!