Added comments to understand where to implement

src/Umbraco.Web.BackOffice/Controllers/MemberController.cs

@@ -167,6 +167,7 @@ namespace Umbraco.Web.BackOffice.Controllers
         [TypeFilter(typeof(OutgoingEditorModelEventAttribute))]
         public MemberDisplay GetByKey(Guid key)
         {
+            //TODO: this is not finding the key currently
             IMember foundMember = _memberService.GetByKey(key);
             if (foundMember == null)
             {

src/Umbraco.Web.BackOffice/Trees/MemberTreeController.cs

@@ -66,7 +66,6 @@ namespace Umbraco.Web.BackOffice.Trees
             var node = GetSingleTreeNode(id, queryStrings);
 
             //add the tree alias to the node since it is standalone (has no root for which this normally belongs)
-            //TODO: ID is null since new member created
             node.Value.AdditionalData["treeAlias"] = TreeAlias;
             return node;
         }