diff --git a/source/mkw/ExtractedGame.py b/source/mkw/ExtractedGame.py
index 565f3c4..9ac09dd 100644
--- a/source/mkw/ExtractedGame.py
+++ b/source/mkw/ExtractedGame.py
@@ -90,7 +90,7 @@ class ExtractedGame:
 
         # write ctfile data to a file in the cache
         ct_file = (cache_directory / "ctfile.lpar")
-        ct_file.write_text(mod_config.get_ctfile())
+        ct_file.write_text(mod_config.get_ctfile(template="-"))
 
         # TODO: the lpar file should be customizable
         for lecode_file in (self.path / "files/rel/").glob("lecode-*.bin"):
diff --git a/source/mkw/ModConfig.py b/source/mkw/ModConfig.py
index 3b88dde..976a76d 100644
--- a/source/mkw/ModConfig.py
+++ b/source/mkw/ModConfig.py
@@ -165,9 +165,10 @@ class ModConfig:
         yield from self.get_ordered_cups()
         yield from self.get_unordered_cups()
 
-    def get_ctfile(self) -> str:
+    def get_ctfile(self, template: str) -> str:
         """
         Return the ct_file generated from the ModConfig
+        :template: template for the track name
         :return: ctfile content
         """
         lecode_flags = filter(lambda v: v is not None, [
@@ -187,7 +188,7 @@ class ModConfig:
 
         for cup in self.get_cups():
             # get all the cup ctfile, use "-" for the template since the track's name are not used here
-            ctfile += cup.get_ctfile(mod_config=self, template="-")
+            ctfile += cup.get_ctfile(mod_config=self, template=template)
 
         return ctfile
 
diff --git a/source/mkw/Patch/PatchOperation/Operation/BmgTxtEditor/Layer/CTFileLayer.py b/source/mkw/Patch/PatchOperation/Operation/BmgTxtEditor/Layer/CTFileLayer.py
new file mode 100644
index 0000000..004cbb4
--- /dev/null
+++ b/source/mkw/Patch/PatchOperation/Operation/BmgTxtEditor/Layer/CTFileLayer.py
@@ -0,0 +1,21 @@
+from source.mkw.Patch.PatchOperation.Operation.BmgTxtEditor.Layer import *
+from source.wt import ctc
+
+Patch: any
+
+
+class CTFileLayer(AbstractLayer):
+    """
+    Represent a layer that replace bmg entry by their ID
+    """
+
+    mode = "ctfile"
+
+    def __init__(self, template: dict[str, str]):
+        self.template = template
+
+    def patch_bmg(self, patch: "Patch", decoded_content: str) -> str:
+        return decoded_content + "\n" + (
+            ctc.bmg_ctfile(patch.mod_config.get_ctfile(template=self.template))
+        ) + "\n"
+        # add new bmg definition at the end of the bmg file, overwritting old id.
diff --git a/source/mkw/Patch/PatchOperation/Operation/BmgTxtEditor/Layer/__init__.py b/source/mkw/Patch/PatchOperation/Operation/BmgTxtEditor/Layer/__init__.py
index 3cef67b..cdaf9e0 100644
--- a/source/mkw/Patch/PatchOperation/Operation/BmgTxtEditor/Layer/__init__.py
+++ b/source/mkw/Patch/PatchOperation/Operation/BmgTxtEditor/Layer/__init__.py
@@ -11,5 +11,5 @@ class AbstractLayer(ABC):
         """
 
 
-from source.mkw.Patch.PatchOperation.Operation.BmgTxtEditor.Layer import IDLayer, RegexLayer
-__all__ = ["AbstractLayer", "IDLayer", "RegexLayer"]
+from source.mkw.Patch.PatchOperation.Operation.BmgTxtEditor.Layer import IDLayer, RegexLayer, CTFileLayer
+__all__ = ["AbstractLayer", "IDLayer", "RegexLayer", "CTFileLayer"]
diff --git a/source/wt/ctc.py b/source/wt/ctc.py
new file mode 100644
index 0000000..508d8f1
--- /dev/null
+++ b/source/wt/ctc.py
@@ -0,0 +1,17 @@
+from source.wt import *
+
+tools_path = tools_szs_dir / "wctct"
+
+
+_tools_run = get_tools_run_function(tools_path)
+_tools_run_popen = get_tools_run_popen_function(tools_path)
+
+
+def bmg_ctfile(ctfile: "Path | str") -> str:
+
+    process = _tools_run_popen("BMG", "-", "--lecode")
+    stdout, _ = process.communicate(input=ctfile.encode("utf-8"))
+    if process.returncode != 0:
+        raise WTError(tools_path, process.returncode)
+
+    return stdout.decode("utf-8")