diff --git a/anabatic/src/AutoHorizontal.cpp b/anabatic/src/AutoHorizontal.cpp
index 57ebafb3..f87c587b 100644
--- a/anabatic/src/AutoHorizontal.cpp
+++ b/anabatic/src/AutoHorizontal.cpp
@@ -405,6 +405,11 @@ namespace Anabatic {
       if (spinFlags & SegSourceBottom) setFlags( SegTargetBottom );
       if (spinFlags & SegTargetTop   ) setFlags( SegSourceTop );
       if (spinFlags & SegTargetBottom) setFlags( SegSourceBottom );
+
+      unsigned int invalidatedFlags = _flags & (SegInvalidatedSource|SegInvalidatedTarget);
+      unsetFlags( SegInvalidatedSource|SegInvalidatedTarget );
+      if (invalidatedFlags & SegInvalidatedSource) setFlags( SegInvalidatedTarget );
+      if (invalidatedFlags & SegInvalidatedTarget) setFlags( SegInvalidatedSource );
     }
   }
 
diff --git a/anabatic/src/AutoVertical.cpp b/anabatic/src/AutoVertical.cpp
index c049400c..9976ec1b 100644
--- a/anabatic/src/AutoVertical.cpp
+++ b/anabatic/src/AutoVertical.cpp
@@ -342,6 +342,11 @@ namespace Anabatic {
       if (spinFlags & SegSourceBottom) setFlags( SegTargetBottom );
       if (spinFlags & SegTargetTop   ) setFlags( SegSourceTop );
       if (spinFlags & SegTargetBottom) setFlags( SegSourceBottom );
+
+      unsigned int invalidatedFlags = _flags & (SegInvalidatedSource|SegInvalidatedTarget);
+      unsetFlags( SegInvalidatedSource|SegInvalidatedTarget );
+      if (invalidatedFlags & SegInvalidatedSource) setFlags( SegInvalidatedTarget );
+      if (invalidatedFlags & SegInvalidatedTarget) setFlags( SegInvalidatedSource );
     }
   }