The thing is just too clunky to work properly - 'shared' apiaries can only be managed by the SBI so we are unable to get in there and update it - SBI's haven't really got the time to log in with you and chop and change thinks as needed, no thought given to those finishing and abandoning an apiary. To be honest, would you, even if you were able, after packing up beekeeping take the time to log in, reduce your colonies to zero and then delete the apiary from the database?
Same with any government database really - always go for the more steam driven problem wrought system that probably costs more than a decent bit of kit rather than take the time to research a decent one.