diff --git a/Tr/PrKalmanFilter/include/PrKalmanFilter/KF.h b/Tr/PrKalmanFilter/include/PrKalmanFilter/KF.h
index 95f56c15c32128de4f44b07ea14d759f94f72b62..8620c1db26ceb935005e986caa13ba3ddb7a9f73 100644
--- a/Tr/PrKalmanFilter/include/PrKalmanFilter/KF.h
+++ b/Tr/PrKalmanFilter/include/PrKalmanFilter/KF.h
@@ -1358,9 +1358,7 @@ namespace LHCb::Pr::Tracks::Fit {
         auto id = track.ft_lhcbID( i );
         new_track.template field<tag::FTHits>()[i].template field<tag::LHCbID>().set( id );
       }
-      if constexpr ( isDownstream<InputTrackType> )
-        new_track.field<tag::trackSeed>().set( track.seed_track_index() );
-      else if constexpr ( isLong<InputTrackType> )
+      if constexpr ( isDownstream<InputTrackType> || isLong<InputTrackType> )
         new_track.field<tag::trackSeed>().set( track.trackSeed() );
       else if constexpr ( isSeed<InputTrackType> )
         new_track.field<tag::trackSeed>().set( track.indices() );