IO-1049 Unvoid RO.

client/src/components/jobs-admin-mark-reexport/jobs-admin-mark-reexport.component.jsx

@@ -55,7 +55,11 @@ export function JobAdminMarkReexport({ bodyshop, job }) {
   };
 
   return (
-    <Button loading={loading} onClick={handleUpdate}>
+    <Button
+      loading={loading}
+      disabled={!job.date_exported}
+      onClick={handleUpdate}
+    >
       {t("jobs.labels.markforreexport")}
     </Button>
   );