Index: Schema.pm
===================================================================
--- Schema.pm	(revision 13783)
+++ Schema.pm	(working copy)
@@ -1845,13 +1845,10 @@
 
 	} elsif (!$create && $isLocal && $genre && $genre ne $track->genres->single->name) {
 
-		# Bug 1143: The user has updated the genre tag, and is
-		# rescanning We need to remove the previous associations.
-		$track->genreTracks->delete_all;
+		# Just add the new genre--MIP scans lose multiple genres when typo cleanup is attempted.
 
 		Slim::Schema::Genre->add($genre, $track);
 
-		$log->debug("-- Deleted all previous genres for this track");
 		$log->debug("-- Track has genre '$genre'");
 	}