From a business perspective, the step of sending quotations is optional, because it is not really an important step that need to be followed in the system. It must be possible to automatize the update of this step to the next level "Sent" by batch mode for all the quotations from the "Approved" Status.

It was possible in the next versions, so why not now?

Normal status for Project quotations :

- Created/Submitted/Approved/Sent/Confirmed

So possibility to update automatically in batch from Approved to Sent.