under control in Paper UI I see that there are some controls doubled. I found teh information that this was maybe caused by the simple mode. So i opened things -> channel in paper UI and tried to delete the wrong linked item:
Now I cut out all items in my items file and saved it. After that I pasted everything in again and saved it. Now all unwished links are gone.
During I edited my file I copied a item and modified it. Maybe that was the problem. But I don´t know why because now I didn´t changed anything I just deleted it and added it again.
Fine. Items created in Paper UI or via simple mode have to be deleted in UI and items created via *.items file have to be delted in this file.
But why some of my items have been linked to other ones? I just deleted my *.items file and replaced it with the same like before. Normaly I would say all must be the same like before but the links between the items are gone now.
Simple mode would have created some links for you. Can’t say much else, with no example of your Items or what you were expecting to happen. Do you link your file-defined Items in file also? It is possible (but probably unwise) to use PaperUI to create links for file-defined Items.