delete all objects without tag

[admin]

Use this, change the tag name as needed. And make a backup just in case

Code:

tag = 'test'

tagged = {}

objs = grp.tag(tag)
for _, obj in ipairs(objs) do
  tagged[ obj.address ] = true
end

objs = grp.all()
for _, obj in ipairs(objs) do
  if not tagged[ obj.address ] then
    grp.delete(obj.address)
  end
end