I think this is very much a grey area. I don't think the KKW has ever had a formal policy about transferring rank from other organization. But I do know we've had several high ranked KKW posters here who had stated that it was common practice to grant equivalent rank to Dan holders from other TKD styles. If memory serves, the person was expected to agree to teach the KKW curriculum from that time, but we all know that's completely unenforceable.Kukkiwon has had some initiatives to allow people to test for rank transfer from ITF and ATA. I'm not sure if they're still doing that, but they were for a while. But if your certificate is from an unaffiliated school, yeah, you're SOL and have to start at KKW 1st dan.