Further tinkering... Instead of changing the vanilla quest I instead copied as new record. I then ran the game with the vanilla quest and my new quest (unedited). Checking sqv, both quests were running and had matching REF data for NPCs. Next, I edited a single alias in my new quest. I changed one of the existing guards to point to one of my new guards. Re-ran game. This time my new quest was broken again and not running. Next, instead of editing any records, I instead removed one entire alias. So no new data, just removed existing data. Re-ran game. This time my new quest was running and showed all good REFs. And it lacked the REF to the alias I removed. It seems like what I'm doing wrong should be obvious but I'm just not seeing some vital piece of the puzzle. Any help would be greatly appreciated.