diff --git a/src/spikeinterface/postprocessing/template_metrics.py b/src/spikeinterface/postprocessing/template_metrics.py
index 477ad04440..7de6e8766a 100644
--- a/src/spikeinterface/postprocessing/template_metrics.py
+++ b/src/spikeinterface/postprocessing/template_metrics.py
@@ -88,9 +88,22 @@ class ComputeTemplateMetrics(AnalyzerExtension):
     need_recording = False
     use_nodepipeline = False
     need_job_kwargs = False
+    need_backward_compatibility_on_load = True
 
     min_channels_for_multi_channel_warning = 10
 
+    def _handle_backward_compatibility_on_load(self):
+
+        # For backwards compatibility - this reformats metrics_kwargs as metric_params
+        if (metrics_kwargs := self.params.get("metrics_kwargs")) is not None:
+
+            metric_params = {}
+            for metric_name in self.params["metric_names"]:
+                metric_params[metric_name] = deepcopy(metrics_kwargs)
+            self.params["metric_params"] = metric_params
+
+            del self.params["metrics_kwargs"]
+
     def _set_params(
         self,
         metric_names=None,
@@ -344,18 +357,6 @@ def _run(self, verbose=False):
     def _get_data(self):
         return self.data["metrics"]
 
-    def load_params(self):
-        AnalyzerExtension.load_params(self)
-        # For backwards compatibility - this reformats metrics_kwargs as metric_params
-        if (metrics_kwargs := self.params.get("metrics_kwargs")) is not None:
-
-            metric_params = {}
-            for metric_name in self.params["metric_names"]:
-                metric_params[metric_name] = deepcopy(metrics_kwargs)
-            self.params["metric_params"] = metric_params
-
-            del self.params["metrics_kwargs"]
-
 
 register_result_extension(ComputeTemplateMetrics)
 compute_template_metrics = ComputeTemplateMetrics.function_factory()
diff --git a/src/spikeinterface/qualitymetrics/quality_metric_calculator.py b/src/spikeinterface/qualitymetrics/quality_metric_calculator.py
index e7e7c244ea..d71450853f 100644
--- a/src/spikeinterface/qualitymetrics/quality_metric_calculator.py
+++ b/src/spikeinterface/qualitymetrics/quality_metric_calculator.py
@@ -55,6 +55,13 @@ class ComputeQualityMetrics(AnalyzerExtension):
     need_recording = False
     use_nodepipeline = False
     need_job_kwargs = True
+    need_backward_compatibility_on_load = True
+
+    def _handle_backward_compatibility_on_load(self):
+        # For backwards compatibility - this renames qm_params as metric_params
+        if (qm_params := self.params.get("qm_params")) is not None:
+            self.params["metric_params"] = qm_params
+            del self.params["qm_params"]
 
     def _set_params(
         self,
@@ -262,13 +269,6 @@ def _run(self, verbose=False, **job_kwargs):
     def _get_data(self):
         return self.data["metrics"]
 
-    def load_params(self):
-        AnalyzerExtension.load_params(self)
-        # For backwards compatibility - this renames qm_params as metric_params
-        if (qm_params := self.params.get("qm_params")) is not None:
-            self.params["metric_params"] = qm_params
-            del self.params["qm_params"]
-
 
 register_result_extension(ComputeQualityMetrics)
 compute_quality_metrics = ComputeQualityMetrics.function_factory()