Add initialization and reset code

PROMS/VEPROMS.CSLA.Library/Generated/GroupAssignment.cs

@@ -564,6 +564,7 @@ namespace VEPROMS.CSLA.Library
 		{
 			MarkAsChild();
 			// TODO: Add any initialization & defaults
+			_AID = Assignment.NextAID;
 			_StartDate = _GroupAssignmentExtension.DefaultStartDate;
 			_DTS = _GroupAssignmentExtension.DefaultDTS;
 			_UsrID = _GroupAssignmentExtension.DefaultUsrID;