Everything communicates in a job transition whether starting, leaving, or doing both at the same time. One mark of integrity is being the same person in all situations. But different situations call for different approaches. So, when leaving a job, choose the right approach for your situation and manage your personal brand in a way that strengthens long-term relationships.
Choose your approach to bridge the gap between the context and current state of play and what you want things to look like after the transition. This is about your personal brand. The core of your personal brand should be constant. But the reasons for others to believe that about you vary by context and situation. The question is what messages do you want to send during your transition to reinforce your long-term positioning.