AMHR has a rule that you cannot run an AMHA show on the same AMHR Show schedule. But there are clubs who do run and AMHR show one day and then close the show and the next day open and AMHA show and close it in one day. So it does happen. In MN this past summer, the MMHC three a one day APSC, one day AMHR and one day AMHA show on the same weekend.