Yep, think it´ll work.
I called the free AppleNumber of Germany. 0800...
I had to wait about 10 minutes to get to speak to someone, but this lady was very friendly and helpful, she said she will reactivate my order and tries to change the old case to the one i wished.
I shall try to update my order within the next 24 hours, if there´s no change, i´ll recieve the case i ordered before.
Yep, Apple...your service is nice!