Gets copying logic working for the block editor, needs more tests though

src/Umbraco.Core/Models/Blocks/BlockEditorDataConverter.cs

@@ -18,10 +18,35 @@ namespace Umbraco.Core.Models.Blocks
             _propertyEditorAlias = propertyEditorAlias;
         }
 
+        public BlockEditorData ConvertFrom(JToken json)
+        {
+            var value = json.ToObject<BlockValue>();
+            return Convert(value);
+        }
+
+        public bool TryDeserialize(string json, out BlockEditorData blockEditorData)
+        {
+            try
+            {
+                var value = JsonConvert.DeserializeObject<BlockValue>(json);
+                blockEditorData = Convert(value);
+                return true;
+            }
+            catch (System.Exception)
+            {
+                blockEditorData = null;
+                return false;
+            }
+        }
+
         public BlockEditorData Deserialize(string json)
         {
             var value = JsonConvert.DeserializeObject<BlockValue>(json);
+            return Convert(value);
+        }
 
+        private BlockEditorData Convert(BlockValue value)
+        {
             if (value.Layout == null)
                 return BlockEditorData.Empty;
 

src/Umbraco.Core/Models/Blocks/BlockListLayoutItem.cs

@@ -12,7 +12,7 @@ namespace Umbraco.Core.Models.Blocks
         [JsonConverter(typeof(UdiJsonConverter))]
         public Udi ContentUdi { get; set; }
 
-        [JsonProperty("settingsUdi")]
+        [JsonProperty("settingsUdi", NullValueHandling = NullValueHandling.Ignore)]
         [JsonConverter(typeof(UdiJsonConverter))]
         public Udi SettingsUdi { get; set; }
     }

src/Umbraco.Core/Models/PropertyCollection.cs

@@ -7,6 +7,7 @@ using System.Runtime.Serialization;
 
 namespace Umbraco.Core.Models
 {
+
     /// <summary>
     /// Represents a collection of property values.
     /// </summary>