diff --git a/rust/hg-core/src/copy_tracing.rs b/rust/hg-core/src/copy_tracing.rs
--- a/rust/hg-core/src/copy_tracing.rs
+++ b/rust/hg-core/src/copy_tracing.rs
@@ -720,11 +720,13 @@
         } else {
             // The last value comes the current merge, this value -will- win
             // eventually.
+            oracle.record_overwrite(src_minor.rev, src_major.rev);
             MergePick::Major
         }
     } else if src_minor.rev == current_merge {
         // The last value comes the current merge, this value -will- win
         // eventually.
+        oracle.record_overwrite(src_major.rev, src_minor.rev);
         MergePick::Minor
     } else if src_major.path == src_minor.path {
         // we have the same value, but from other source;