diff --git a/base/modules/psb_d_linmap_mod.f90 b/base/modules/psb_d_linmap_mod.f90
index 85a87906..8f92fe5c 100644
--- a/base/modules/psb_d_linmap_mod.f90
+++ b/base/modules/psb_d_linmap_mod.f90
@@ -50,6 +50,7 @@ module psb_d_linmap_mod
     procedure, pass(map) :: is_asb   => d_is_asb
     procedure, pass(map) :: free     => d_free
     procedure, pass(map) :: clone    => d_clone
+    procedure, pass(map) :: cnv      => psb_d_map_cscnv
   end type psb_dlinmap_type
 
 
@@ -163,7 +164,7 @@ contains
     use psb_i_vect_mod
     use psb_d_mat_mod
     implicit none
-    type(psb_dlinmap_type), intent(inout)  :: map
+    class(psb_dlinmap_type), intent(inout)  :: map
     integer(psb_ipk_), intent(out)                   :: info
     character(len=*), intent(in), optional :: type
     class(psb_d_base_sparse_mat), intent(in), optional :: mold
diff --git a/base/modules/psb_d_vect_mod.F90 b/base/modules/psb_d_vect_mod.F90
index b80dd260..2472b815 100644
--- a/base/modules/psb_d_vect_mod.F90
+++ b/base/modules/psb_d_vect_mod.F90
@@ -562,19 +562,23 @@ contains
 
   subroutine d_vect_cnv(x,mold)
     class(psb_d_vect_type), intent(inout) :: x
-    class(psb_d_base_vect_type), intent(in) :: mold
+    class(psb_d_base_vect_type), intent(in), optional :: mold
     class(psb_d_base_vect_type), allocatable :: tmp
     integer(psb_ipk_) :: info
 
+    if (present(mold)) then 
 #ifdef HAVE_MOLD
       allocate(tmp,stat=info,mold=mold)
 #else
       call mold%mold(tmp,info)
 #endif
-    call x%v%sync()
-    if (info == psb_success_) call tmp%bld(x%v%v)
-    call x%v%free(info)
-    call move_alloc(tmp,x%v)
+      if (allocated(x%v)) then 
+        call x%v%sync()
+        if (info == psb_success_) call tmp%bld(x%v%v)
+        call x%v%free(info)
+      end if
+      call move_alloc(tmp,x%v)
+    end if
 
   end subroutine d_vect_cnv
 
diff --git a/base/tools/psb_d_map.f90 b/base/tools/psb_d_map.f90
index 0a0f67f9..65b6330b 100644
--- a/base/tools/psb_d_map.f90
+++ b/base/tools/psb_d_map.f90
@@ -137,11 +137,12 @@ subroutine psb_d_map_X2Y_vect(alpha,x,beta,y,map,info,work)
 
   select case(map_kind)
   case(psb_map_aggr_)
-
+    
     ictxt = map%p_desc_Y%get_context()
     nr2   = map%p_desc_Y%get_global_rows()
     nc2   = map%p_desc_Y%get_local_cols() 
     call yt%bld(nc2,mold=x%v)
+!!$    write(0,*)'From map_aggr_X2Y apply: ',map%p_desc_X%v_halo_index%get_fmt()
     if (info == psb_success_) call psb_halo(x,map%p_desc_X,info,work=work)
     if (info == psb_success_) call psb_csmm(done,map%map_X2Y,x,dzero,yt,info)
     if ((info == psb_success_) .and. map%p_desc_Y%is_repl()) then
@@ -307,6 +308,7 @@ subroutine psb_d_map_Y2X_vect(alpha,x,beta,y,map,info,work)
     nr2   = map%p_desc_X%get_global_rows()
     nc2   = map%p_desc_X%get_local_cols() 
     call yt%bld(nc2,mold=y%v)
+!!$    write(0,*)'From map_aggr_Y2X apply: ',map%p_desc_Y%v_halo_index%get_fmt()
     if (info == psb_success_) call psb_halo(x,map%p_desc_Y,info,work=work)
     if (info == psb_success_) call psb_csmm(done,map%map_Y2X,x,dzero,yt,info)
     if ((info == psb_success_) .and. map%p_desc_X%is_repl()) then