Thank you very much for your answer.
I did not mind that you would not speak german,
so please excuse me für this.
I will try to explan my problem in english:
-> I have a Container named „Shopping“.
Then i put two „shopping“ links in the Container
-> Now i ceated a new container named “FireFox Inhalt”
I put 1 link into this container, „testpilot.firefox.com“
-> So right now i have in Container „Shopping“ 2 Links and in
Container “FireFox Inhalt” 1 link.
-> I closed both Container and then opend Container „Shopping“
and i have suddendly 3 links in it.
And when i open the Container “FireFox Inhalt“ i also have all 3 links in it.
So i am doing something wronge, that i do not understand. Can you help me?