Keep the thread
A follow-up is more useful when it accounts for what was already discussed. Saved conversations and approved memory help people return to that context.
Notice what changed
A new symptom, observation or question may change the next step. The interface should make those changes easy to describe without pretending that saved context is always complete.
Stay in control
People should be able to review memory and decide what to share. Do not wait for an online follow-up if symptoms become urgent or deteriorate.