Two regional Goodwill organizations in Arizona are considering a merger. Goodwill Industries of Central Arizona, Inc. and Goodwill Industries of Northern Arizona announced that they are engaged in preliminary discussions regarding a potential merger of the two nonprofit organizations. Phoenix's Goodwill Industries of Central Arizona provides job placement and employment services in Maricopa and Yuma counties, and Flagstaff-based Goodwill Industries of Northern Arizona operates in Coconino and Mohave…