diff --git a/docs/reference/configuration/keywords.rst b/docs/reference/configuration/keywords.rst
index 0e49a155935..43f914d0e30 100644
--- a/docs/reference/configuration/keywords.rst
+++ b/docs/reference/configuration/keywords.rst
@@ -902,7 +902,6 @@ and/or history matching project.
                 "ID" : {
                 "A" : 0.88,
                 },
-                "ID:A" : 0.88,
                 }
 
 
diff --git a/src/ert/enkf_main.py b/src/ert/enkf_main.py
index 50f33c76b67..8d2820943c6 100644
--- a/src/ert/enkf_main.py
+++ b/src/ert/enkf_main.py
@@ -66,15 +66,6 @@ def _value_export_json(
         key: dict(param_map.items()) for key, param_map in values.items()
     }
 
-    # Composite
-    json_out.update(
-        {
-            f"{key}:{param}": value
-            for key, param_map in values.items()
-            for param, value in param_map.items()
-        }
-    )
-
     # Disallow NaN from being written: ERT produces the parameters and the only
     # way for the output to be NaN is if the input is invalid or if the sampling
     # function is buggy. Either way, that would be a bug and we can report it by