I've built a survey that includes a Multiple Choice question with over 600 answers. I need to apply Display Logic to every answer. Is there a way to apply Display Logic to multiple answers at once or do I need to add it to each answer individually?

Unfortunately no, but it has been submitted as a feature request!

Was this feature ever added? Being unable to click back on branch logic for blocks is not ideal and it USA quite cumbersome to apply display logic to every single question.