Can you please explain if your remember
1. which interaction stopped working ?
2. what do you mean by interaction atopped working, like it is not appearing in the publish content, or not able to interact with that interaction or ...something like that
3. What step did you tried before re-publishing?
Kindly close the powerpoint and republish it again .
I hope it will work.
Also if possible , please share the content with us (email@example.com)for quick fix .
Adobe Presenter Engg Team