>>1007
That dialog allows you just to copy one tag or namespace at a time, if that helps. It doesn't support parents or siblings yet, so you don't have to be afraid of that.
You can go 'copy all creator: tags to public tag repo' no problem. The interface is awkward right now–you have to enter 'creator' in the normal tag dropdown and then make sure to select 'specific namespace's mappings' in the dropdown, then hit go. The gui will freeze for a bit, and then you should have some pending tags. You can browse your existing media to make sure that only the creator tags are now pending.
If it all goes wrong, just select 'forget' from the pending menu and try again.
>>1008
That sounds great, but I think it is probably a sibling thing. Convert the ugly way of identifying the person to the nice way. For instance, I think 'ktora' goes to 'creator:kamitora' on my public tag repo right now.