When I enter a horse to race at a track in Arizona, do the registration papers have to be on file at that track?

Horses may be entered to race at any commercial or county fair race track if the registration papers are on file with a racing office of a permittee currently conducting live racing in Arizona. However, in instances where a race overfills, some Racing Secretaries give preference to entries whose papers are on file at the track where the entry is made.