Understanding Relume Workflow: Sitemap and Wireframe Sync Issues

Hi guys, I don't understand the workflow in Relume. I was under the impression that making changes in the sitemap would change the wireframes as well (so, say I create an extra section on the homepage in the sitemap, it would create an extra section in the wireframes as well). Yet after a while it stopped "updating"/syncing the wireframes and the sitemap? So I thought, perhaps I have to regenerate the wireframes, but then my sitemap - where I already did a lot of changes - got regenerated too! Even though it clearly says "regenerate wireframes" and not sitemap...? Have I lost all my work as well now or can I somehow retrieve?