This changes were made on Live.

config/sync/field.field.node.case_study.field_image.yml

@@ -6,7 +6,14 @@ dependencies:
     - field.storage.node.field_image
     - node.type.case_study
   module:
+    - content_translation
     - image
+third_party_settings:
+  content_translation:
+    translation_sync:
+      alt: alt
+      title: title
+      file: '0'
 _core:
   default_config_hash: kTZSUq7WPcC_QIRMzI3I_otBSuTVQkJix5i1o63eAo4
 id: node.case_study.field_image
@@ -16,7 +23,7 @@ bundle: case_study
 label: Image
 description: ''
 required: false
-translatable: false
+translatable: true
 default_value: {  }
 default_value_callback: ''
 settings: