So I’ve been looking for a way to change the Stock Availability back to In Stock when the quantity field is greater than 0. The system already automatically changes the Stoc
The Stock Availability text can be handled in the Inventory Tab of the Product settings, same tab as the stock quantity field. Since you have to input your stock qty manually anyway, I would suggest to just change the Stock Availability setting back to 'In Stock' as you enter the new QTY for your product.