diff --git a/include/boost/multi_index/detail/index_base.hpp b/include/boost/multi_index/detail/index_base.hpp
index d00de37..bd31558 100644
--- a/include/boost/multi_index/detail/index_base.hpp
+++ b/include/boost/multi_index/detail/index_base.hpp
@@ -332,7 +332,14 @@ protected:
   void final_clear_(){final().clear_();}
 
   template<typename Index>
-  void final_merge_(Index& x){return final().merge_(x);}
+  void final_transfer_range_(Index& x)
+    {final_transfer_range_(x,x.begin(),x.end());}
+  template<typename Index>
+  void final_transfer_range_(
+    Index& x,
+    BOOST_DEDUCED_TYPENAME Index::iterator first,
+    BOOST_DEDUCED_TYPENAME Index::iterator last)
+    {final().transfer_range_(x,first,last);}
 
   void final_swap_(final_type& x){final().swap_(x);}
 
diff --git a/include/boost/multi_index/detail/ord_index_impl.hpp b/include/boost/multi_index/detail/ord_index_impl.hpp
index d0e8a84..1a5b40c 100644
--- a/include/boost/multi_index/detail/ord_index_impl.hpp
+++ b/include/boost/multi_index/detail/ord_index_impl.hpp
@@ -542,8 +542,9 @@ public:
   {
     BOOST_MULTI_INDEX_CHECK_EQUAL_ALLOCATORS(*this,x);
     BOOST_MULTI_INDEX_ORD_INDEX_CHECK_INVARIANT;
-
-    this->final_merge_(x);
+    if(x.end().get_node()!=this->header()){ /* different containers */
+      this->final_transfer_range_(x);
+    }
   }
 
   template<typename Index>
diff --git a/include/boost/multi_index/hashed_index.hpp b/include/boost/multi_index/hashed_index.hpp
index 108cbc8..ff84151 100644
--- a/include/boost/multi_index/hashed_index.hpp
+++ b/include/boost/multi_index/hashed_index.hpp
@@ -521,8 +521,9 @@ public:
   {
     BOOST_MULTI_INDEX_CHECK_EQUAL_ALLOCATORS(*this,x);
     BOOST_MULTI_INDEX_HASHED_INDEX_CHECK_INVARIANT;
-
-    this->final_merge_(x);
+    if(x.end().get_node()!=this->header()){ /* different containers */
+      this->final_transfer_range_(x);
+    }
   }
 
   template<typename Index>
diff --git a/include/boost/multi_index/random_access_index.hpp b/include/boost/multi_index/random_access_index.hpp
index 724ad1b..f7a2103 100644
--- a/include/boost/multi_index/random_access_index.hpp
+++ b/include/boost/multi_index/random_access_index.hpp
@@ -541,7 +541,9 @@ public:
     BOOST_MULTI_INDEX_CHECK_DIFFERENT_CONTAINER(
       this->final(*this),this->final(x));
     BOOST_MULTI_INDEX_RND_INDEX_CHECK_INVARIANT;
-    external_splice(position,x,boost::is_copy_constructible<value_type>());
+    external_splice(
+      position,x,x.begin(),x.end(),
+      boost::is_copy_constructible<value_type>());
   }
 
   template<typename Index>
@@ -1100,50 +1102,6 @@ private:
     return std::pair<iterator,bool>(make_iterator(p.first),p.second);
   }
 
-  template<typename Index>
-  void external_splice(
-    iterator position,Index& x,boost::true_type /* copy-constructible value */)
-  {
-    if(get_allocator()==x.get_allocator()){
-      external_splice(position,x,boost::false_type());
-    }
-    else{
-      /* backwards compatibility with old, non-transfer-based splice */
-
-      iterator  first=x.begin(),last=x.end();
-      size_type n=size();
-      BOOST_TRY{
-        while(first!=last){
-          if(push_back(*first).second)first=x.erase(first);
-          else ++first;
-        }
-      }
-      BOOST_CATCH(...){
-        relocate(position,begin()+n,end());
-        BOOST_RETHROW;
-      }
-      BOOST_CATCH_END
-      relocate(position,begin()+n,end());
-    }
-  }
-
-  template<typename Index>
-  void external_splice(
-    iterator position,Index& x,
-    boost::false_type /* copy-constructible value */)
-  {
-    BOOST_MULTI_INDEX_CHECK_EQUAL_ALLOCATORS(*this,x);
-    size_type n=size();
-    BOOST_TRY{
-      this->final_merge_(x);
-    }
-    BOOST_CATCH(...){
-      relocate(position,begin()+n,end());
-    }
-    BOOST_CATCH_END
-    relocate(position,begin()+n,end());
-  }
-
   template<typename Index>
   void external_splice(
     iterator position,Index& x,BOOST_DEDUCED_TYPENAME Index::iterator i,
@@ -1241,10 +1199,7 @@ private:
     BOOST_MULTI_INDEX_CHECK_EQUAL_ALLOCATORS(*this,x);
     size_type n=size();
     BOOST_TRY{
-      while(first!=last){
-        this->final_transfer_(
-          x,static_cast<final_node_type*>((first++).get_node()));
-      }
+      this->final_transfer_range_(x,first,last);
     }
     BOOST_CATCH(...){
       relocate(position,begin()+n,end());
diff --git a/include/boost/multi_index/sequenced_index.hpp b/include/boost/multi_index/sequenced_index.hpp
index 2c22fcf..d70ccff 100644
--- a/include/boost/multi_index/sequenced_index.hpp
+++ b/include/boost/multi_index/sequenced_index.hpp
@@ -492,7 +492,9 @@ public:
     BOOST_MULTI_INDEX_CHECK_DIFFERENT_CONTAINER(
       this->final(*this),this->final(x));
     BOOST_MULTI_INDEX_SEQ_INDEX_CHECK_INVARIANT;
-    external_splice(position,x,boost::is_copy_constructible<value_type>());
+    external_splice(
+      position,x,x.begin(),x.end(),
+      boost::is_copy_constructible<value_type>());
   }
 
   template<typename Index>
@@ -1013,49 +1015,6 @@ private:
     return std::pair<iterator,bool>(make_iterator(p.first),p.second);
   }
 
-  template<typename Index>
-  void external_splice(
-    iterator position,Index& x,boost::true_type /* copy-constructible value */)
-  {
-    if(get_allocator()==x.get_allocator()){
-      external_splice(position,x,boost::false_type());
-    }
-    else{
-      /* backwards compatibility with old, non-transfer-based splice */
-
-      iterator first=x.begin(),last=x.end();
-      while(first!=last){
-        if(insert(position,*first).second)first=x.erase(first);
-        else ++first;
-      }
-    }
-  }
-
-  template<typename Index>
-  void external_splice(
-    iterator position,Index& x,
-    boost::false_type /* copy-constructible value */)
-  {
-    BOOST_MULTI_INDEX_CHECK_EQUAL_ALLOCATORS(*this,x);
-    if(position==end()){
-      this->final_merge_(x);
-    }
-    else{
-      iterator first=end();
-      --first;
-      BOOST_TRY{
-        this->final_merge_(x);
-      }
-      BOOST_CATCH(...){
-        ++first;
-        relink(position.get_node(),first.get_node(),header());
-      }
-      BOOST_CATCH_END
-      ++first;
-      relink(position.get_node(),first.get_node(),header());
-    }
-  }
-
   template<typename Index>
   void external_splice(
     iterator position,Index& x,BOOST_DEDUCED_TYPENAME Index::iterator i,
@@ -1143,19 +1102,13 @@ private:
   {
     BOOST_MULTI_INDEX_CHECK_EQUAL_ALLOCATORS(*this,x);
     if(position==end()){
-      while(first!=last){
-        this->final_transfer_(
-          x,static_cast<final_node_type*>((first++).get_node()));
-      }
+      this->final_transfer_range_(x,first,last);
     }
     else{
       iterator first_to_relink=end();
       --first_to_relink;
       BOOST_TRY{
-        while(first!=last){
-          this->final_transfer_(
-            x,static_cast<final_node_type*>((first++).get_node()));
-        }
+        this->final_transfer_range_(x,first,last);
       }
       BOOST_CATCH(...){
         ++first_to_relink;
diff --git a/include/boost/multi_index_container.hpp b/include/boost/multi_index_container.hpp
index 9b76255..bd5a847 100644
--- a/include/boost/multi_index_container.hpp
+++ b/include/boost/multi_index_container.hpp
@@ -972,18 +972,13 @@ BOOST_MULTI_INDEX_PROTECTED_IF_MEMBER_TEMPLATE_FRIENDS:
   }
 
   template<typename Index>
-  void merge_(Index& x)
+  void transfer_range_(
+    Index& x,
+    BOOST_DEDUCED_TYPENAME Index::iterator first,
+    BOOST_DEDUCED_TYPENAME Index::iterator last)
   {
-    typedef typename Index::iterator source_iterator;
-
-    source_iterator last=x.end();
-
-    if(last.get_node()!=this->header()){ /* different containers */
-      source_iterator first=x.begin();
-
-      while(first!=last){
-        transfer_(x,static_cast<final_node_type*>((first++).get_node()));
-      }
+    while(first!=last){
+      transfer_(x,static_cast<final_node_type*>((first++).get_node()));
     }
   }