Allow me to change postage weights that have previously been put in by me
I now use different packaging and so the weights that I previously used in shipping rules are now incorrect but there is no way of changing them so I now have to change each one individually each time I apply it to an order. very time consuming.
I'm pretty sure you can do this already. When applying postage there is a tick box option to overwrite existing data for that item. You might also be able to change it in your products page.