Hello, I created a group in order to make my "offline efforts" publicly available and open it to participation in a possible future. My idea was to work idenpendently in "My Library" and copy final versions of items to the group library. The Zotero documentation states:

"Note that group libraries are wholly separate from My Library. Any items dragged into them are separate copies and changes to the items will not be reflected in your own copy of the item until you drag it back into My Library."

Well, I copied items from "My Library" to the group, but when I edited them online in the group tab and removed my private tags, the tags were also being deleted in "My Library". This had already taken place in December 2015 and since then I haven't done any further testing in this regard. What was going on there and how can I assure that "My Library" and my group(s) are really separate from each other despite copying items between them?

Thank you.