BP Sales Area OWN DATA

Hi,

I want to change in BP for examle. Incoterms with mass/massd transaction.

1. The problem is that mass is not going to change it (add values) when the initial value is "empty"

2. Also when I click buton "delete own data" all fields are filling up with data which comes from "Reference BP" (which is good Image may be NSFW.
Clik here to view.

SO pls help me how to :

1. Mass add values for empty fields od sales area data or

2. Mass "click" on "delete own data" for specific BP id numbers.

Image may be NSFW.
Clik here to view.