--- webform_revisions.module.old	2012-05-13 14:26:14.000000000 +0200
+++ webform_revisions.module	2012-05-13 14:27:32.000000000 +0200
@@ -601,3 +601,12 @@
 
 }
 
+/**
+ * webform 3.x no longer stores the 'submitted' value when updating a submission
+ * but exposes a _presave hook, so we're using it
+ */
+function webform_revisions_webform_submission_presave($node, &$submission) {
+  $submission->submitted = time();
+}
+
+