If you do not enter a modified closed according to the old data. If an error occurs.Want to edit the information with Customs will result in shipping delays, and costs incurred.
If you do not enter the editing had to be closed based on old information. If an error occurs, you must edit the information to the customs later. Will result in delivery delays and costs incurred.
If you do not modify, to close the enter based on old data. If it is wrong to modify data deal with customs later. It will affect the delivery delay and cost to happen.