reset prod stream status only if removing officer

scipost_django/production/forms.py

@@ -79,7 +79,7 @@ class AssignOfficerForm(forms.ModelForm):
                 constants.PROOFS_SOURCE_REQUESTED,
             ]:
                 stream.status = constants.PROOFS_TASKED
-            elif stream.status == constants.PROOFS_TASKED:
+            elif (stream.status == constants.PROOFS_TASKED) and stream.officer is None:
                 stream.status = constants.PRODUCTION_STREAM_INITIATED
             stream.save()
         return stream