1 files changed, 6 insertions, 1 deletions

diff --git a/kabc/stdaddressbook.cpp b/kabc/stdaddressbook.cpp
index ec47a4e..181a09e 100644
--- a/kabc/stdaddressbook.cpp
+++ b/kabc/stdaddressbook.cpp
@@ -164,9 +164,14 @@ bool StdAddressBook::save()
   bool ok = true;
   AddressBook *ab = self();
 
   ab->deleteRemovedAddressees();
-
+  Iterator ait;
+  for ( ait = ab->begin(); ait != ab->end(); ++ait ) {
+      if ( !(*ait).IDStr().isEmpty() ) {
+          (*ait).insertCustom( "KADDRESSBOOK", "X-ExternalID", (*ait).IDStr() );
+    }
+  }
   KRES::Manager<Resource>::ActiveIterator it;
   KRES::Manager<Resource> *manager = ab->resourceManager();
   for ( it = manager->activeBegin(); it != manager->activeEnd(); ++it ) {
     if ( !(*it)->readOnly() && (*it)->isOpen() ) {