Clone JsonNode when copying it to a different parent

Author: ronaldbarendse

src/Umbraco.Deploy.Contrib/Migrators/Legacy/Content/DocumentArtifactJsonMigrator.cs

@@ -26,7 +26,7 @@ public override JsonNode Migrate(JsonNode artifactJson)
         {
             schedule.Add(new JsonObject()
             {
-                ["Date"] = releaseDate,
+                ["Date"] = releaseDate.DeepClone(),
                 ["Culture"] = string.Empty,
                 ["Action"] = nameof(ContentScheduleAction.Release)
             });
@@ -36,7 +36,7 @@ public override JsonNode Migrate(JsonNode artifactJson)
         {
             schedule.Add(new JsonObject()
             {
-                ["Date"] = expireDate,
+                ["Date"] = expireDate.DeepClone(),
                 ["Culture"] = string.Empty,
                 ["Action"] = nameof(ContentScheduleAction.Expire)
             });

src/Umbraco.Deploy.Contrib/Migrators/Legacy/ContentType/ContentTypeArtifactJsonMigrator.cs

@@ -26,8 +26,8 @@ public override JsonNode Migrate(JsonNode artifactJson)
     {
         artifactJson["Permissions"] = new JsonObject()
         {
-            ["AllowedAtRoot"] = artifactJson["AllowedAtRoot"],
-            ["AllowedChildContentTypes"] = artifactJson["AllowedChildContentTypes"],
+            ["AllowedAtRoot"] = artifactJson["AllowedAtRoot"]?.DeepClone(),
+            ["AllowedChildContentTypes"] = artifactJson["AllowedChildContentTypes"]?.DeepClone(),
         };
 
         return artifactJson;

src/Umbraco.Deploy.Contrib/Migrators/Legacy/DataType/PreValuesDataTypeArtifactJsonMigrator.cs

@@ -26,7 +26,7 @@ public override JsonNode Migrate(JsonNode artifactJson)
 
             foreach (var preValue in preValues)
             {
-                var value = preValue.Value;
+                var value = preValue.Value?.DeepClone();
 
                 // Convert pre-value serialized JSON to actual JSON objects/arrays
                 if (value is JsonValue jsonValue &&