diff --git a/module/task/model.php b/module/task/model.php
index e35edef4e0..0748f6208f 100644
--- a/module/task/model.php
+++ b/module/task/model.php
@@ -96,6 +96,8 @@ class taskModel extends model
 
             ->setIF($this->post->assignedTo != $oldTask->assignedTo, 'assignedDate', $now)
 
+            ->setIF($this->post->status == 'wait' and $this->post->left == $oldTask->left and $this->post->consumed == 0, 'left', $this->post->estimate)
+
             ->add('lastEditedBy',   $this->app->user->account)
             ->add('lastEditedDate', $now)
             ->remove('comment,files,labels')