Changing Valuation Method for Items

How can I change the Valuation Methods for an item, or all items within a BOM, without deleting and recreating the Item? This is a huge problem.

If there are existing transaction you will not be able to change it. You will need to create new Item only.

After creating new Item, you can also try and merge it with existing item, using rename functionality. With this, stock will also be updated for new item.

I can’t just change all the names of my Items. The item name within ERP is also the item name we use in all of our actual documents. Renaming and merging 300 items isn’t an option.

Did you find any solution for this?