unmapped particle did not get cellID set

applications/utilities/preProcessing/mapFields/mapLagrangian.C

@@ -223,6 +223,7 @@ void mapLagrangian(const meshToMesh& meshToMeshInterp)
                         {
                             unmappedSource.erase(sourceParticleI);
                             addParticles.append(sourceParticleI);
+			    iter().cell()=targetCell;
                             targetParcels.addParticle
                             (
                                 sourceParcels.remove(&iter())

src/lagrangian/basic/Particle/Particle.H

@@ -329,6 +329,9 @@ public:
             //- Return current particle position
             inline vector& position();
 
+            //- Return current cell particle is in
+            inline label& cell();
+
             //- Return current cell particle is in
             inline label cell() const;
 

src/lagrangian/basic/Particle/ParticleI.H

@@ -303,6 +303,12 @@ inline label Particle<ParticleType>::cell() const
     return celli_;
 }
 
+template<class ParticleType>
+inline label& Particle<ParticleType>::cell()
+{
+    return celli_;
+}
+
 
 template<class ParticleType>
 inline label Particle<ParticleType>::face() const