Hi Tom @riverside, thanks very much for your question
When you create a medical history form in Dentally on behalf of the patient, you're able to edit the form for up to 24h after completing, so you shouldn't need to make a new one if it's within this timeframe. After that point, editing isn't possible and a new one should be created in order to ensure the answers are up-to-date - the new one will populate with answers from the previous one and then you can change as needed and save.
If the patient is completing medical history themselves (through Dentally Portal), their answers will auto-populate from previous responses so you can resend a medical history request and they'll be able to complete it again, with their previous answers auto-populating
Does this cover the scenario you're talking about?