o2n->useArray(old2NewBg,false,C_DEALLOC,nbCells,1);
if(check)
o2n=o2n->checkAndPreparePermutation();
//
const int *o2nPtr=o2n->getPointer();
const int *conn=_conn->begin(),*conni=_conn_indx->begin();
o2n->useArray(old2NewBg,false,C_DEALLOC,nbCells,1);
if(check)
o2n=o2n->checkAndPreparePermutation();
//
const int *o2nPtr=o2n->getPointer();
const int *conn=_conn->begin(),*conni=_conn_indx->begin();