diff --git a/src/main/java/forestry/apiculture/genetics/ApiaristTracker.java b/src/main/java/forestry/apiculture/genetics/ApiaristTracker.java
index 3a1b2b6c2..9f0acdedb 100755
--- a/src/main/java/forestry/apiculture/genetics/ApiaristTracker.java
+++ b/src/main/java/forestry/apiculture/genetics/ApiaristTracker.java
@@ -24,6 +24,11 @@ import forestry.plugins.PluginApiculture;
 
 public class ApiaristTracker extends BreedingTracker implements IApiaristTracker {
 
+	/** Required for creation from map storage */
+	public ApiaristTracker(String s) {
+		this(s, null);
+	}
+
 	public ApiaristTracker(String s, GameProfile player) {
 		super(s, player);
 	}
diff --git a/src/main/java/forestry/arboriculture/genetics/ArboristTracker.java b/src/main/java/forestry/arboriculture/genetics/ArboristTracker.java
index 37d17ad58..ee8666312 100755
--- a/src/main/java/forestry/arboriculture/genetics/ArboristTracker.java
+++ b/src/main/java/forestry/arboriculture/genetics/ArboristTracker.java
@@ -22,6 +22,11 @@ import forestry.plugins.PluginArboriculture;
 
 public class ArboristTracker extends BreedingTracker implements IArboristTracker {
 
+	/** Required for creation from map storage */
+	public ArboristTracker(String s) {
+		this(s, null);
+	}
+
 	public ArboristTracker(String s, GameProfile player) {
 		super(s, player);
 	}
diff --git a/src/main/java/forestry/core/genetics/BreedingTracker.java b/src/main/java/forestry/core/genetics/BreedingTracker.java
index f401c5a55..ab8b38b63 100755
--- a/src/main/java/forestry/core/genetics/BreedingTracker.java
+++ b/src/main/java/forestry/core/genetics/BreedingTracker.java
@@ -171,7 +171,7 @@ public abstract class BreedingTracker extends WorldSavedData implements IBreedin
 		// TODO: remove legacy handling
 		String species0 = mutation.getAllele0().getUID();
 		String species1 = mutation.getAllele1().getUID();
-		return discoveredMutations.contains(mutationString) || discoveredMutations.contains(species0 + '-' + species1);
+		return discoveredMutations.contains(species0 + '-' + species1);
 	}
 
 	@Override
diff --git a/src/main/java/forestry/lepidopterology/genetics/LepidopteristTracker.java b/src/main/java/forestry/lepidopterology/genetics/LepidopteristTracker.java
index 37a237b75..2f72181c6 100755
--- a/src/main/java/forestry/lepidopterology/genetics/LepidopteristTracker.java
+++ b/src/main/java/forestry/lepidopterology/genetics/LepidopteristTracker.java
@@ -23,6 +23,11 @@ import forestry.plugins.PluginLepidopterology;
 
 public class LepidopteristTracker extends BreedingTracker implements ILepidopteristTracker {
 
+	/** Required for creation from map storage */
+	public LepidopteristTracker(String s) {
+		this(s, null);
+	}
+
 	public LepidopteristTracker(String s, GameProfile player) {
 		super(s, player);
 	}