diff -r b873350e6258 -r 8d281761dea4 lemon/cplex.cc
--- a/lemon/cplex.cc	Thu Jan 19 15:25:06 2012 +0100
+++ b/lemon/cplex.cc	Sat May 05 10:22:44 2012 +0200
@@ -437,8 +437,6 @@
     CPXfreeprob(cplexEnv(),&_prob);
     int status;
     _prob = CPXcreateprob(cplexEnv(), &status, "Cplex problem");
-    rows.clear();
-    cols.clear();
   }
 
   void CplexBase::_messageLevel(MessageLevel level) {