I feel you should implement a new button in the IP Database where it says "With selected: "
It would be Add to Group Database so you could easily add IPs from your own database to the group list, this would make sharing servers between groups quicker, as the system in place at the minute (Copying and pasting each IP) is just time consuming rather than being actually incremental to the gameplay.
At the moment i bet some of the less active groups have basically empty group databases, with the new button you could even do it with selected, meaning you add add multiple IPs at once and quickly.
Oh and if they could disappear from the list when the server changes IP, that would be great
Keep ctrl pressed while clicking on the table cell for the IP you want to copy, press ctrl+c, go to wordpad or notepad, press ctrn+v. go to the ip list add form, go to notepad, select one ip by using shift+home or shift+end, press ctrl+x, go to the browser, fill the ip by pressing ctrl+v while filling the form
;)