diff --git a/front/src/applications/stdcm/components/StdcmForm/StdcmOperationalPoint.tsx b/front/src/applications/stdcm/components/StdcmForm/StdcmOperationalPoint.tsx
index a1ff6fd1868..94130c48c7c 100644
--- a/front/src/applications/stdcm/components/StdcmForm/StdcmOperationalPoint.tsx
+++ b/front/src/applications/stdcm/components/StdcmForm/StdcmOperationalPoint.tsx
@@ -145,6 +145,10 @@ const StdcmOperationalPoint = ({ location, pathStepId, disabled }: StdcmOperatio
   useEffect(() => {
     if (location) {
       setSearchTerm(location.name);
+      // Clear the list of CH suggestions if the location has changed to avoid showing outated suggestions
+      if (!chSuggestions.some((suggestion) => suggestion.label === location.secondary_code)) {
+        setChSuggestions([]);
+      }
     } else {
       setSearchTerm('');
       setChSuggestions([]);
diff --git a/front/src/reducers/osrdconf/stdcmConf/index.ts b/front/src/reducers/osrdconf/stdcmConf/index.ts
index e0c8194aac9..c90845754e3 100644
--- a/front/src/reducers/osrdconf/stdcmConf/index.ts
+++ b/front/src/reducers/osrdconf/stdcmConf/index.ts
@@ -229,10 +229,10 @@ export const stdcmConfSlice = createSlice({
       }>
     ) {
       const { linkedTrainExtremity, trainName, pathStep, pathStepId } = action.payload;
-      const { name, ch, uic, geographic, arrivalDate, date, time } = pathStep;
+      const { name, ch, uic, geographic, arrivalDate, date, time, trigram } = pathStep;
 
       const newPathStep = {
-        location: { name, coordinates: geographic.coordinates, uic, secondary_code: ch },
+        location: { name, coordinates: geographic.coordinates, uic, secondary_code: ch, trigram },
         id: pathStepId,
         arrival: arrivalDate,
         ...(linkedTrainExtremity === 'origin' && { arrivalType: ArrivalTimeTypes.PRECISE_TIME }),