Hmm. I wonder if that clip is from KTVK's morning news (some two years before the launch of Good Morning Arizona). Jana Wallis, the anchor seen here, went on to co-anchor KTVK's weekend news, while Mike Moore, seen seated at the anchor desk, eventually served as Good Morning Arizona's first news anchor (Jodi Applegate was the host).
This clip from 1993 is also interesting:
It features Jodi Applegate and Royal Norman hosting a show called Arizona's Family Saturday. The program looks and feels a lot like Good Morning Arizona, which premiered the following year. Could it be that, when it lost its ABC affiliation, KTVK essentially expanded the format of Arizona's Family Saturday to weekdays?