Approval process to Tasks from TFS

I have a environment with Project Server 2010 integrated with TFS 2012.
When I create a task in TFS, the task is submited to approval in PS. But, is necessary approve two times the same task in Approval Central.

1st approval: 

Approval Type: Status Update
Update Type: New Task Request

2nd approval: 

Approval Type: Status Update
Update Type: Task Update

How can I execute only one approval when the task (from TFS) is submitted to Project Server?

Regards,