diff --git a/backend/app/src/test/kotlin/io/tolgee/service/dataImport/StoredDataImporterTest.kt b/backend/app/src/test/kotlin/io/tolgee/service/dataImport/StoredDataImporterTest.kt
index fcc373cb28..e3a9221ece 100644
--- a/backend/app/src/test/kotlin/io/tolgee/service/dataImport/StoredDataImporterTest.kt
+++ b/backend/app/src/test/kotlin/io/tolgee/service/dataImport/StoredDataImporterTest.kt
@@ -164,4 +164,48 @@ class StoredDataImporterTest : AbstractSpringTest() {
     assertThat(overriddenTranslation.text).isEqualTo(importTestData.translationWithConflict.text)
     assertThat(forceKeptTranslation.text).isEqualTo("What a text")
   }
+
+  @Test
+  fun `only updates old keys but does not add new ones when option enabled`() {
+    defaultImportSettings.onlyUpdateWithoutAdd = true
+    storedDataImporter =
+      StoredDataImporter(
+        applicationContext,
+        importTestData.import,
+        ForceMode.OVERRIDE,
+        importSettings = defaultImportSettings,
+      )
+    importTestData.addImportKeyThatDoesntExistInProject()
+    testDataService.saveTestData(importTestData.root)
+    login()
+
+    storedDataImporter.doImport()
+    val projectId = importTestData.root.data.projects[0].self.id
+    val importedKey = keyService.find(projectId, "I'm new key in project", null)
+    assertThat(importedKey).isNull()
+
+    val forceOverriddenTranslationId = importTestData.root.data.projects[0].data.translations[1].self.id
+    val forceOverriddenTranslation = translationService.find(forceOverriddenTranslationId)!!
+    assertThat(forceOverriddenTranslation.text).isEqualTo("Imported text")
+  }
+
+  @Test
+  fun `add new key when option disabled`() {
+    defaultImportSettings.onlyUpdateWithoutAdd = false
+    storedDataImporter =
+      StoredDataImporter(
+        applicationContext,
+        importTestData.import,
+        ForceMode.OVERRIDE,
+        importSettings = defaultImportSettings,
+      )
+    importTestData.addImportKeyThatDoesntExistInProject()
+    testDataService.saveTestData(importTestData.root)
+    login()
+
+    storedDataImporter.doImport()
+    val projectId = importTestData.root.data.projects[0].self.id
+    val importedKey = keyService.find(projectId, "I'm new key in project", null)
+    assertThat(importedKey).isNotNull()
+  }
 }
diff --git a/backend/data/src/main/kotlin/io/tolgee/development/testDataBuilder/data/dataImport/ImportTestData.kt b/backend/data/src/main/kotlin/io/tolgee/development/testDataBuilder/data/dataImport/ImportTestData.kt
index d448c70c5b..83941d286d 100644
--- a/backend/data/src/main/kotlin/io/tolgee/development/testDataBuilder/data/dataImport/ImportTestData.kt
+++ b/backend/data/src/main/kotlin/io/tolgee/development/testDataBuilder/data/dataImport/ImportTestData.kt
@@ -431,6 +431,20 @@ class ImportTestData {
     }
   }
 
+  fun addImportKeyThatDoesntExistInProject() {
+    importBuilder.data.importFiles[0].build {
+      val key =
+        addImportKey {
+          name = "I'm new key in project"
+        }
+      addImportTranslation {
+        text = "Hey!"
+        this.key = key.self
+        language = importEnglish
+      }
+    }
+  }
+
   data class AddFilesWithNamespacesResult(
     val importFrenchInNs: ImportLanguage,
   )
diff --git a/webapp/src/views/projects/import/component/ImportSettingsPanel.tsx b/webapp/src/views/projects/import/component/ImportSettingsPanel.tsx
index 595e8f9b80..69bfa150c3 100644
--- a/webapp/src/views/projects/import/component/ImportSettingsPanel.tsx
+++ b/webapp/src/views/projects/import/component/ImportSettingsPanel.tsx
@@ -133,16 +133,15 @@ export const ImportSettingsPanel: FC = (props) => {
         {...additionalCheckboxProps}
       />
       <LoadingCheckboxWithSkeleton
-          loading={loadingItems.has('onlyUpdateWithoutAdd')}
-          onChange={(e) => {
-            onChange('onlyUpdateWithoutAdd', e.target.checked);
-          }}
-          data-cy={''}
-          hint={t('import_only_update_without_add_key_label_hint')}
-          label={t('import_only_update_without_add_key_label')}
-          checked={state?.onlyUpdateWithoutAdd}
-
-          {...additionalCheckboxProps}
+        loading={loadingItems.has('onlyUpdateWithoutAdd')}
+        onChange={(e) => {
+          onChange('onlyUpdateWithoutAdd', e.target.checked);
+        }}
+        data-cy={''}
+        hint={t('import_only_update_without_add_key_label_hint')}
+        label={t('import_only_update_without_add_key_label')}
+        checked={state?.onlyUpdateWithoutAdd}
+        {...additionalCheckboxProps}
       />
     </StyledPanelBox>
   );