I'm using DateFolders for event documents but have a problem. Some of the events have duplicate names.

When adding a new event it is first moved to a default DateFolder (todays year/month). After updating the event with a date it is moved to the correct date folder location. However, if an event with the same name is already in that folder a duplicate is created which gives problems in links etc. I would have expected that a "(1)" was appended to the node name to prevent duplicates.