diff --git a/Common/src/main/java/com/almostreliable/unified/config/Config.java b/Common/src/main/java/com/almostreliable/unified/config/Config.java
index 9abf5c7..05f740d 100644
--- a/Common/src/main/java/com/almostreliable/unified/config/Config.java
+++ b/Common/src/main/java/com/almostreliable/unified/config/Config.java
@@ -25,19 +25,33 @@ public class Config {
         JsonObject json = safeLoadJson(name);
         T config = serializer.deserialize(json);
         if (serializer.isInvalid()) {
-            AlmostUnified.LOG.warn("Config {} is invalid or does not exist. Saving new config", name);
-            save(name, config, serializer);
+            Path filePath = buildPath(createConfigDir(), name);
+            if (Files.exists(filePath)) {
+                backupConfig(name, filePath);
+            }
+            AlmostUnified.LOG.warn("Creating config: {}", name);
+            save(filePath, config, serializer);
         }
         return config;
     }
 
-    public static <T extends Config> void save(String name, T config, Serializer<T> serializer) {
+    private static void backupConfig(String name, Path p) {
+        AlmostUnified.LOG.warn("Config {} is invalid. Backing up and recreating.", name);
+        Path backupPath = p.resolveSibling(p.getFileName() + ".bak");
+        try {
+            Files.deleteIfExists(backupPath);
+            Files.move(p, backupPath);
+        } catch (IOException e) {
+            AlmostUnified.LOG.error("Could not backup config file", e);
+        }
+    }
+
+    public static <T extends Config> void save(Path p, T config, Serializer<T> serializer) {
         JsonObject json = serializer.serialize(config);
-        Path p = createConfigDir();
         Gson gson = new GsonBuilder().setPrettyPrinting().create();
         String jsonString = gson.toJson(json);
         try {
-            Files.writeString(buildPath(p, name),
+            Files.writeString(p,
                     jsonString,
                     StandardOpenOption.CREATE,
                     StandardOpenOption.WRITE);
diff --git a/Common/src/main/java/com/almostreliable/unified/config/UnifyConfig.java b/Common/src/main/java/com/almostreliable/unified/config/UnifyConfig.java
index 1e01396..823392f 100644
--- a/Common/src/main/java/com/almostreliable/unified/config/UnifyConfig.java
+++ b/Common/src/main/java/com/almostreliable/unified/config/UnifyConfig.java
@@ -20,13 +20,13 @@ public class UnifyConfig extends Config {
     private final List<String> stoneStrata;
     private final List<String> unbakedTags;
     private final List<String> materials;
-    private final Map<String, String> priorityOverrides;
+    private final Map<ResourceLocation, String> priorityOverrides;
     private final Set<UnifyTag<Item>> ignoredTags;
     private final Set<Pattern> ignoredRecipeTypes;
     private final Set<Pattern> ignoredRecipes;
     private final boolean hideJeiRei;
 
-    public UnifyConfig(List<String> modPriorities, List<String> stoneStrata, List<String> unbakedTags, List<String> materials, Map<String, String> priorityOverrides, Set<UnifyTag<Item>> ignoredTags, Set<Pattern> ignoredRecipeTypes, Set<Pattern> ignoredRecipes, boolean hideJeiRei) {
+    public UnifyConfig(List<String> modPriorities, List<String> stoneStrata, List<String> unbakedTags, List<String> materials, Map<ResourceLocation, String> priorityOverrides, Set<UnifyTag<Item>> ignoredTags, Set<Pattern> ignoredRecipeTypes, Set<Pattern> ignoredRecipes, boolean hideJeiRei) {
         this.modPriorities = modPriorities;
         this.stoneStrata = stoneStrata;
         this.unbakedTags = unbakedTags;
@@ -67,7 +67,7 @@ public class UnifyConfig extends Config {
         return result;
     }
 
-    public Map<String, String> getPriorityOverrides() {
+    public Map<ResourceLocation, String> getPriorityOverrides() {
         return Collections.unmodifiableMap(priorityOverrides);
     }
 
@@ -105,13 +105,14 @@ public class UnifyConfig extends Config {
                     Defaults.getTags(AlmostUnifiedPlatform.INSTANCE.getPlatform()));
             List<String> materials = safeGet(() -> JsonUtils.toList(json.getAsJsonArray(MATERIALS)),
                     Defaults.MATERIALS);
-            LinkedHashMap<String, String> priorityOverrides = safeGet(() -> json.getAsJsonObject(PRIORITY_OVERRIDES)
+            Map<ResourceLocation, String> priorityOverrides = safeGet(() -> json.getAsJsonObject(PRIORITY_OVERRIDES)
                     .entrySet()
                     .stream()
-                    .collect(Collectors.toMap(Map.Entry::getKey,
-                            e -> e.getValue().getAsString(),
+                    .collect(Collectors.toMap(
+                            entry -> new ResourceLocation(entry.getKey()),
+                            entry -> entry.getValue().getAsString(),
                             (a, b) -> b,
-                            LinkedHashMap::new)), new LinkedHashMap<>());
+                            HashMap::new)), new HashMap<>());
             Set<UnifyTag<Item>> ignoredTags = safeGet(() -> JsonUtils
                     .toList(json.getAsJsonArray(IGNORED_TAGS))
                     .stream()
@@ -145,7 +146,7 @@ public class UnifyConfig extends Config {
             json.add(MATERIALS, JsonUtils.toArray(config.materials));
             JsonObject priorityOverrides = new JsonObject();
             config.priorityOverrides.forEach((tag, mod) -> {
-                priorityOverrides.add(tag, new JsonPrimitive(mod));
+                priorityOverrides.add(tag.toString(), new JsonPrimitive(mod));
             });
             json.add(PRIORITY_OVERRIDES, priorityOverrides);
             json.add(IGNORED_TAGS,
diff --git a/Common/src/main/java/com/almostreliable/unified/utils/ReplacementMap.java b/Common/src/main/java/com/almostreliable/unified/utils/ReplacementMap.java
index f459ca0..6c3f631 100644
--- a/Common/src/main/java/com/almostreliable/unified/utils/ReplacementMap.java
+++ b/Common/src/main/java/com/almostreliable/unified/utils/ReplacementMap.java
@@ -107,7 +107,7 @@ public class ReplacementMap {
 
     @Nullable
     private ResourceLocation getOverrideForTag(UnifyTag<Item> tag, List<ResourceLocation> items) {
-        String priorityOverride = unifyConfig.getPriorityOverrides().get(tag.location().toString());
+        String priorityOverride = unifyConfig.getPriorityOverrides().get(tag.location());
         if (priorityOverride != null) {
             ResourceLocation item = findItemByNamespace(items, priorityOverride);
             if (item != null) return item;