Open Access collections have Maintain WorldCat Holdings set to disabled as the default
- WorldShare Collection Manager
If you expand the Holdings and MARC records accordion in an unselected Open Access Collection, you can see that the Maintain WorldCat Holdings is set to Disable for this collection.
This is working as designed. A library will have to change this setting if they want WorldCat Holdings on Open Access Collections. The only exception is the Dumbarton Oaks Research Library and Collection, which appears to be set to maintain holdings at the collection level.