It appears as if the event doesn't properly clear NAP's, I've added an issue to the internal database regarding this. Though, if you encounter issues like this in the future I suggest that you post them in the Bug Forums, as it's easy to miss issues if they're posted in the general forum/s.I just tried a game as Charlemagne following his story event with Conclave and I found a few issues.
After Carloman died I got his land and a claim on Lombardy, except I couldn't declare war for it because we had a non-aggression pact. But it didn't show in the "pact" tab and I had divorced the Lombard princess with the event.
- 2