This whole topic is news to me and doesn't make sense. I have three homes: Houston, San Diego, and Napa, CA. I often book round trips that have me leaving one point and returning 6-8 weeks in the future. However, within that trip, I may need to go back to the point of origin for business for a few days, so will book SAN-IAH within IAH-SAN. Are you (the group/AA) saying this is not permitted?