diff --git a/loader-common/src/main/java/org/cyclops/cyclopscore/config/ModConfigLocation.java b/loader-common/src/main/java/org/cyclops/cyclopscore/config/ModConfigLocation.java
index 0f544a21f46..826177af780 100644
--- a/loader-common/src/main/java/org/cyclops/cyclopscore/config/ModConfigLocation.java
+++ b/loader-common/src/main/java/org/cyclops/cyclopscore/config/ModConfigLocation.java
@@ -4,6 +4,7 @@
  * Copied from NeoForge's ModConfig.Type to be aligned with it.
  * @author rubensworks
  */
+// TODO: in next major, rename COMMON to LOCAL and SERVER to SYNCED to match NeoForge's ModConfig.Type
 public enum ModConfigLocation {
     /**
      * Common mod config for configuration that needs to be loaded on both environments.
diff --git a/loader-fabric/src/main/java/org/cyclops/cyclopscore/modcompat/forgeconfig/ConfigHandlerFabricHandler.java b/loader-fabric/src/main/java/org/cyclops/cyclopscore/modcompat/forgeconfig/ConfigHandlerFabricHandler.java
index a2f934edb5e..b0ef8ac4b1e 100644
--- a/loader-fabric/src/main/java/org/cyclops/cyclopscore/modcompat/forgeconfig/ConfigHandlerFabricHandler.java
+++ b/loader-fabric/src/main/java/org/cyclops/cyclopscore/modcompat/forgeconfig/ConfigHandlerFabricHandler.java
@@ -27,12 +27,12 @@ public ConfigHandlerFabricHandler(ConfigHandlerFabric configHandler) {
 
     public void onLoad(ModConfig configEvent) {
         this.configHandler.getMod().log(Level.TRACE, "Load config");
-        syncProcessedConfigs(false);
+        syncProcessedConfigs(configEvent, false);
     }
 
     public void onReload(ModConfig configEvent) {
         this.configHandler.getMod().log(Level.TRACE, "Reload config");
-        syncProcessedConfigs(true);
+        syncProcessedConfigs(configEvent, true);
     }
 
     /**
@@ -62,7 +62,7 @@ public void initialize(Collection<IConfigInitializer> configInitializers) {
                     configBuilders.put(modConfigLocationToType(configProperty.getConfigLocation()), configBuilderProperty);
                 }
                 this.configHandler.getCategories().add(configProperty.getCategory());
-                this.onConfigPropertyInit(configProperty, configBuilder);
+                this.onConfigPropertyInit(configProperty, configBuilderProperty);
                 if (configProperty.isCommandable()) {
                     this.configHandler.getCommandableProperties().put(configProperty.getName(), configProperty);
                 }
@@ -102,13 +102,18 @@ protected <T> void onConfigPropertyInit(ConfigurablePropertyData<T> configProper
     /**
      * Sync the config values that were already loaded.
      * This will update the values in-game and in the config file.
+     * @param config The mod config that is being loaded.
      * @param reload If we are reloading, otherwise this is an initial load.
      */
     @SuppressWarnings("unchecked")
-    public void syncProcessedConfigs(boolean reload) {
+    public void syncProcessedConfigs(ModConfig config, boolean reload) {
         for(ExtendedConfigCommon<?, ?, ?> eConfig : this.configHandler.getConfigurables()) {
             // Re-save additional properties
             for(ConfigurablePropertyData configProperty : eConfig.configProperties.values()) {
+                // Only properties of the loaded config have values, others would throw.
+                if (modConfigLocationToType(configProperty.getConfigLocation()) != config.getType()) {
+                    continue;
+                }
                 configProperty.saveToField();
                 eConfig.onConfigPropertyReload(configProperty, reload);
             }
diff --git a/loader-forge/src/main/java/org/cyclops/cyclopscore/config/ConfigHandlerForge.java b/loader-forge/src/main/java/org/cyclops/cyclopscore/config/ConfigHandlerForge.java
index da0502dca4b..56738e197a4 100644
--- a/loader-forge/src/main/java/org/cyclops/cyclopscore/config/ConfigHandlerForge.java
+++ b/loader-forge/src/main/java/org/cyclops/cyclopscore/config/ConfigHandlerForge.java
@@ -111,7 +111,7 @@ public void initialize(Collection<IConfigInitializer> configInitializers) {
                     configBuilders.put(modConfigLocationToType(configProperty.getConfigLocation()), configBuilderProperty);
                 }
                 getCategories().add(configProperty.getCategory());
-                this.onConfigPropertyInit(configProperty, configBuilder);
+                this.onConfigPropertyInit(configProperty, configBuilderProperty);
                 if (configProperty.isCommandable()) {
                     getCommandableProperties().put(configProperty.getName(), configProperty);
                 }
@@ -159,6 +159,10 @@ public void syncProcessedConfigs(ModConfig config, boolean reload) {
         for(ExtendedConfigCommon<?, ?, ?> eConfig : this.getConfigurables()) {
             // Re-save additional properties
             for(ConfigurablePropertyData configProperty : eConfig.configProperties.values()) {
+                // Only properties of the loaded config have values, others would throw.
+                if (modConfigLocationToType(configProperty.getConfigLocation()) != config.getType()) {
+                    continue;
+                }
                 configProperty.saveToField();
                 eConfig.onConfigPropertyReload(configProperty, reload);
             }
diff --git a/loader-neoforge/src/main/java/org/cyclops/cyclopscore/config/ConfigHandlerNeoForge.java b/loader-neoforge/src/main/java/org/cyclops/cyclopscore/config/ConfigHandlerNeoForge.java
index 20e22c462e4..92c5b6504f2 100644
--- a/loader-neoforge/src/main/java/org/cyclops/cyclopscore/config/ConfigHandlerNeoForge.java
+++ b/loader-neoforge/src/main/java/org/cyclops/cyclopscore/config/ConfigHandlerNeoForge.java
@@ -112,7 +112,7 @@ public void initialize(Collection<IConfigInitializer> configInitializers) {
                     configBuilders.put(modConfigLocationToType(configProperty.getConfigLocation()), configBuilderProperty);
                 }
                 getCategories().add(configProperty.getCategory());
-                this.onConfigPropertyInit(configProperty, configBuilder);
+                this.onConfigPropertyInit(configProperty, configBuilderProperty);
                 if (configProperty.isCommandable()) {
                     getCommandableProperties().put(configProperty.getName(), configProperty);
                 }
@@ -160,6 +160,10 @@ public void syncProcessedConfigs(ModConfig config, boolean reload) {
         for(ExtendedConfigCommon<?, ?, ?> eConfig : this.getConfigurables()) {
             // Re-save additional properties
             for(ConfigurablePropertyData configProperty : eConfig.configProperties.values()) {
+                // Only properties of the loaded config have values, others would throw.
+                if (modConfigLocationToType(configProperty.getConfigLocation()) != config.getType()) {
+                    continue;
+                }
                 configProperty.saveToField();
                 eConfig.onConfigPropertyReload(configProperty, reload);
             }