Index: tol/btol/serie_type/tsrgra.cpp
===================================================================
--- tol/btol/serie_type/tsrgra.cpp	(revision 4c13d5ca19d5152ffad0194bb329bb4bbf7f51a1)
+++ tol/btol/serie_type/tsrgra.cpp	(revision 2f74496d589290f2f5a28238d66c793cacdcb87c)
@@ -188,5 +188,5 @@
 //BTsrIdentity is the unary + operator. Now the renamed time serie 
 //is saved from changes in new created one
-//d = new BTsrIdentity(NCons(d));
+  d = new BTsrIdentity(NCons(d));
 
 //This is the original behaviour