From efb4669af90417130c66ce159abce82b80000f89 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Torbj=C3=B8rn=20Wiik?=
 <22935970+tbwiik@users.noreply.github.com>
Date: Tue, 18 Aug 2026 15:14:26 +0200
Subject: [PATCH] Disable parameter update models when design matrix

---
 src/ert/gui/experiments/experiment_panel.py | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/src/ert/gui/experiments/experiment_panel.py b/src/ert/gui/experiments/experiment_panel.py
index 6b727a9ebc7..2451de6354f 100644
--- a/src/ert/gui/experiments/experiment_panel.py
+++ b/src/ert/gui/experiments/experiment_panel.py
@@ -203,10 +203,12 @@ def __init__(
             True,
         )
 
-        experiment_type_valid = any(
-            p.update_strategy is not None
-            for p in config.ensemble_config.parameter_configs.values()
-        ) and bool(config.observation_declarations)
+        merged_parameters = config.parameter_configurations_with_design_matrix
+        updatable_parameters_exist = any(
+            p.update_strategy is not None for p in merged_parameters
+        )
+        observations_exist = bool(config.observation_declarations)
+        experiment_model_enabled = updatable_parameters_exist and observations_exist
 
         self.addExperimentConfigPanel(
             MultipleDataAssimilationPanel(
@@ -217,7 +219,7 @@ def __init__(
                 active_realizations,
                 config_num_realization,
             ),
-            experiment_type_valid,
+            experiment_model_enabled,
         )
         self.addExperimentConfigPanel(
             EnsembleSmootherPanel(
@@ -228,7 +230,7 @@ def __init__(
                 active_realizations,
                 config_num_realization,
             ),
-            experiment_type_valid,
+            experiment_model_enabled,
         )
         self.addExperimentConfigPanel(
             EnsembleInformationFilterPanel(
@@ -239,11 +241,11 @@ def __init__(
                 active_realizations,
                 config_num_realization,
             ),
-            experiment_type_valid,
+            experiment_model_enabled,
         )
         self.addExperimentConfigPanel(
             ManualUpdatePanel(run_path, notifier, analysis_config),
-            experiment_type_valid,
+            experiment_model_enabled,
         )
 
         self.configuration_summary = SummaryPanel(config)