When we move agents from one team to another (or between sites, queues, skills, etc.), the historical reporting does not reflect their previous filters. This is especially painful when measuring adherence for time-tracking purposes. For example, if an agents is moved from the "CS team" to the "Collections team," if we want to see how much of the billing hours are in CS compared to how much of the billing hours are in collections, we can't determine what the split is, because the agent count and specific agents has changed.