Hello -- writing to express a need for personalized greeting details (think a leader's name or an associate's name) within a long-running automation (think 5 months) to not update based on other, unrelated lists being updated with new information (think a different associate's name being tied to the leader name for a separate campaign).
The fact that the personalized detail (in our company's example) changes out often, it's hard to do any sort of automation that is personalized and long-standing, because our leader's have multiple associates we communicate with them about, and so the name in that field is constantly updating.