Why is ScriptableObject asset not saving to disk?

I have these nested classes that I want to save:

 [CreateAssetMenu(order = 0)]
 [System.Serializable]
 public class Quest : ScriptableObject
 {
     public string name;
     public string description;
     
     [SerializeField] List<QuestSection> sections;
 }

 [System.Serializable]
 public class QuestSection
 {
     public string name;
     public string description;
     
     [SerializeField] List<QuestObjective> objectives;
 }

 [System.Serializable]
 public class QuestObjective
 {
     public string name;
     public string description;
 }

I made an editor window to edit it after creation and save in disable or when a button in the editor is pressed:

 public void Save()
 {
     if(AssetDatabase.Contains(currentQuest)) //The quest being edited
     {
         AssetDatabase.SetDirty(currentQuest);
         AssetDatabase.Refresh();
         AssetDatabase.SaveAssets();
     }
 }

The name and description of the Quest class are still there after unity restart. The list empties out.

I've set the classes and variables to serialize, I've used various combinations and sequences of SetDirty(), Refresh(), and SaveAssets() but none have worked. Each time I close the editor and open again, the asset is still there, but has an empty list (which I can see in the inspector before even opening my custom editor window so this is not the problem). While the editor is open everything is fine, so it seems to be a save-to-disk problem. I've gone through many forum threads which only give the above answers. Any directions would be appreciated.

Edit: Tried making this work using the Serialized object functions. No luck