Originally Posted by GRiker
Removing libraries in the Customize dialog doesn't remove the corresponding entries from the plugin dropdown list.
Edit: Maybe I misunderstood the logic. Because the IDs were still associated with the book from the other libraries, maybe that's why they still show up, even though the other libraries were disabled.
Removing an Overdrive library from the plugin's configuration has no effect on books that have already been linked to that library. The only noticible difference is that the links to an unconfigured library will be shown with a default name (based on the host name) rather than the previously configured short name for the library.
So selecting a book and then clicking the plugin's icon will always show the links established for that book, whether or not the library still exists in the configuration.
You can remove a link by either deleting the 'odid' identifier under Ids in the Edit Metatdata dialog for the book or by putting the library back into the configuration and selecting 'Unlink selected book...' from the plugin's menu. (The unlink function only removes links for configured libraries. It leaves links to unconfigured libraries alone. I may rethink that in a future release.)