I don´t think this issue is related to the TAC-duplicates issue. I use a free-tagging vocabulary with autocomplete on some nodes for e.g. the city for the content. Now when anyone inputs the city, the autocomplete works well and citys that have been input before can be selected. BUT in my vocabulary, a new term for the same city is created additionally. So after inputing hundred nodes for "New York", I have hundred terms "New York" in my vocabulary although they are all the same.
Any help on this would be very much appreciated. thank you!