One of my Lovelace Views - Lost but seemingly not Gone!

Hopefully not a silly question.
One of my Lovelace Views is HVAC and last night I finally got around to updating all the Hive entities that were out of date and showing as not available.
I exited & saved the view but somehow the whole page has become blank.
This morning I went to rebuild it and found that although no badges are showing in the HVAC View they are all there under Edit / View Configuration.
So my question is why are the badges & cards not showing in the view yet seemingly at least the badges are there to be edited? Can I restore the view somehow?