Hello florain,
To edit the form we will need to surcharge additional. So to better understand the synchronize in the things that you want to edit are as follows:
1. The gross weight are got from product page yes or no.?
2. net weight are got from product page yes or no.?
3. Invoices are used to refer to the picking is of 1 :1 or not? Because does not support the reference that is greater than 1.