If your kid wants to go to State he/she can but will have to wrestle 8&U at Sub-Districts, Districts & State.
Or you can go to the 6&U Championships which will be run at the same time & place as your District Championship Tournament.
As for records District II uses the 6&U record, If you didn't you would have at the smaller weights 5 or six kids with no record. How would you seed them? I know last year in my son's bracket at Sub's there was one 8yr. old and seven 6yr. old's and the 8yr. old didn't make weight.