Can't get bulk import to work

Hi, I have been trying adding all my IP devices with bulk import and got "green light" on all devices. But when I tried to import, I got an error message. I then tried the same prosedure again, but this time I got "red light" on all devices, even though the list was the same. I then tried adding one of the devices manually, but I got "IP already exists in database". I can't see the new IP devices in my list. Have these new IP devices been added, but are "invisible" for me in the GUI? How do I solve this? Regards, Lene Maria Myhre Wireless Trondheim