Fix schoolwork loading bug

EduNetworkBuilder/SchoolworkClass.cs

@@ -48,7 +48,9 @@ namespace EduNetworkBuilder
 
         public SchoolworkClass(XmlNode TheNode)
         {
-            Load(TheNode);
+            List<SchoolworkClass> WhatIs = Load(TheNode);
+            if (WhatIs.Count > 0)
+                SchoolworkClass.Clone(WhatIs[0], this);
         }
 
         public SchoolworkClass(string  FileName)