diff --git a/addons/io_scene_swbf_msh/__init__.py b/addons/io_scene_swbf_msh/__init__.py
index b8c3752..16c5d49 100644
--- a/addons/io_scene_swbf_msh/__init__.py
+++ b/addons/io_scene_swbf_msh/__init__.py
@@ -1,7 +1,7 @@
 bl_info = {
     'name': 'SWBF .msh Import-Export',
     'author': 'Will Snyder, SleepKiller',
-    "version": (1, 0, 0),
+    "version": (1, 2, 1),
     'blender': (2, 80, 0),
     'location': 'File > Import-Export',
     'description': 'Export as SWBF .msh file',
diff --git a/addons/io_scene_swbf_msh/msh_scene_read.py b/addons/io_scene_swbf_msh/msh_scene_read.py
index 8abd1e2..fd40d4d 100644
--- a/addons/io_scene_swbf_msh/msh_scene_read.py
+++ b/addons/io_scene_swbf_msh/msh_scene_read.py
@@ -203,7 +203,9 @@ def _read_modl(modl: Reader, materials_list: List[Material]) -> Model:
 
                 global model_counter
                 global mndx_remap
-                mndx_remap[index] = model_counter
+
+                if index not in mndx_remap:
+                    mndx_remap[index] = model_counter
 
                 model_counter += 1