So there is no import option for the minecraft ui from an archive that you've done from another ui for example or yourself? you need to do the barbaric stuff to copy and then extract yourself? you do know that nearly every webui for minecraft or other games even, fro ark for example or space engineers, does all copy the same thing right? mineos does it, multicraft does it... and others too
and you don't do multi server management i guess? So I need to create for each server a new instance?