To help others in the future, I identified the issue as an option in my theme – in this case Optimize Press – to choose the page that comments are tied to. This apparently sets the value for the Facebook plugin and over-rides the “real” permalink of the page. Choosing the same page you are working on corrects this issue.
Niall, I appreciate your help!
This does indicate is a consistent page URL that is the issue – but you haven’t provided information about where in WP or the Plugin this reference value is set, or how to change it.
Any insights?
