How to set IsPublishedTo status on a Tridion Component?

Question

After a Tridion CMS Database restore from another environment we cannot unpublish Components from the Broker. If we publish to the Broker then we can unpublish. We want to

Answer 1

Components themselves are never published from Tridion, they are only published as part of a Component Presentation (Component + Component Template).

The SetPublishedTo method on a Component Template takes a Component as a parameter. So by calling it you can set one Component Presentation as Published or Unpublished.

Once you've unpublished all Component Presentations of a Component, that Component implicitly becomes Unpublished.