I have many Components published with a Dynamic Component Template, and I want to update the template to no longer be a dynamic Component Template.
To update the template I must first un-publish all usages of it, makes sense.
I try to un-publish the Component Template, therefore un-publishing all the items using it (which I can see in its Where Used). The items I see in Where Used do not appear in "items to be unpublished" list, which again with a bit of though makes sense.
So, I consider writing a small script to un-publish them all (there are lots), but first try to un-publish a few manually to check they are being removed from the Where Used list.
When I un-publish one of the Components in the Where Used list, I get success in the Publish Queue, but the item does not disappear from the Where Used list.
In both Where used (Component and Component Template) I still see listing for the item, rendered with the Component Template. I also still see the published icon on the Component.
One thing which could be an issue; The Component Template was never limited by Schema