diff --git a/frontend/cypress/e2e/side_window/mission_form/sea_control.spec.ts b/frontend/cypress/e2e/side_window/mission_form/sea_control.spec.ts
index 78dee22582..e79077ae53 100644
--- a/frontend/cypress/e2e/side_window/mission_form/sea_control.spec.ts
+++ b/frontend/cypress/e2e/side_window/mission_form/sea_control.spec.ts
@@ -290,7 +290,7 @@ context('Side Window > Mission Form > Sea Control', () => {
 
     // Clôturé par
     // TODO Handle multiple inputs with same label via an `index` in monitor-ui.
-    cy.get('[name="closedBy"]').eq(1).type('Alice')
+    cy.get('[name="closedBy"]').eq(1).type('Alice', { force: true })
 
     cy.wait(500)
 
diff --git a/frontend/cypress/e2e/side_window/mission_form/sea_control_edition.spec.ts b/frontend/cypress/e2e/side_window/mission_form/sea_control_edition.spec.ts
index e79ccbacb6..109547801a 100644
--- a/frontend/cypress/e2e/side_window/mission_form/sea_control_edition.spec.ts
+++ b/frontend/cypress/e2e/side_window/mission_form/sea_control_edition.spec.ts
@@ -1,4 +1,6 @@
 import { editSideWindowMission } from './utils'
+import { customDayjs } from '../../utils/customDayjs'
+import { getUtcDateInMultipleFormats } from '../../utils/getUtcDateInMultipleFormats'
 
 context('Side Window > Mission Form > Sea Control Edition', () => {
   beforeEach(() => {
@@ -213,4 +215,52 @@ context('Side Window > Mission Form > Sea Control Edition', () => {
       .its('response.statusCode')
       .should('eq', 201)
   })
+
+  it(
+    'Should update actions When auto save is not enabled',
+    {
+      env: {
+        FRONTEND_MISSION_FORM_AUTO_SAVE_ENABLED: false
+      }
+    },
+    () => {
+      cy.intercept('PUT', '/bff/v1/mission_actions/4', {
+        body: {
+          id: 4
+        },
+        statusCode: 201
+      }).as('updateMissionAction')
+
+      // -------------------------------------------------------------------------
+      // Form
+      const endDate = getUtcDateInMultipleFormats(customDayjs().utc().add(7, 'day').toISOString())
+      cy.fill('Fin de mission', endDate.utcDateTupleWithTime)
+
+      cy.get('*[data-cy="action-list-item"]').click()
+      cy.wait(500)
+
+      cy.fill(
+        'Observations (hors infractions) sur les obligations déclaratives / autorisations',
+        'Une nouvelle observation'
+      )
+      // We need to wait for some time because there is a throttle on the form
+      cy.wait(500)
+      cy.clickButton('Enregistrer')
+
+      // -------------------------------------------------------------------------
+      // Request
+
+      cy.waitForLastRequest(
+        '@updateMissionAction',
+        {
+          body: {
+            licencesAndLogbookObservations: 'Une nouvelle observation'
+          }
+        },
+        5
+      )
+        .its('response.statusCode')
+        .should('eq', 201)
+    }
+  )
 })
diff --git a/frontend/src/features/Mission/useCases/saveMissionAndMissionActionsByDiff.ts b/frontend/src/features/Mission/useCases/saveMissionAndMissionActionsByDiff.ts
index dff560bacb..f89f22dc70 100644
--- a/frontend/src/features/Mission/useCases/saveMissionAndMissionActionsByDiff.ts
+++ b/frontend/src/features/Mission/useCases/saveMissionAndMissionActionsByDiff.ts
@@ -36,15 +36,17 @@ export const saveMissionAndMissionActionsByDiff =
           if (missionActionData.id === undefined) {
             await dispatch(missionActionApi.endpoints.createMissionAction.initiate(missionActionData)).unwrap()
           } else {
-            missionActionApi.endpoints.updateMissionAction.initiate({
-              ...missionActionData,
-              id: missionActionData.id,
-              /**
-               * This field is not used in the backend use-case, we add this property to
-               * respected the MissionAction type (using `portName` when fetching missions actions).
-               */
-              portName: undefined
-            })
+            await dispatch(
+              missionActionApi.endpoints.updateMissionAction.initiate({
+                ...missionActionData,
+                id: missionActionData.id,
+                /**
+                 * This field is not used in the backend use-case, we add this property to
+                 * respected the MissionAction type (using `portName` when fetching missions actions).
+                 */
+                portName: undefined
+              })
+            )
           }
         })
       ])