Since our Heatmap screenshots are designed to remain the same so that you can revise your old designs and compare them with newer ones, you may not see them updated if you change any design elements in your site.
Solution: Our recommendation here would be to duplicate your Heatmap instead:
This way, you will have snapshots of your past designs as well.
Your Heatmaps may be based on continuous capture
Depending on your plan, Heatmaps may be based on continuous capture by default. As we transition to Continuous Heatmaps, you will still have access to manual snapshot-based Heatmaps as well. Learn more about Continuous Heatmaps.