I use milestone invoices to allocate the firm's portion of a settlement payment on contingency matters. The admin fee is not applicable in this instance and it's a convoluted process to find where that calculation exists and zero it out. It should be an option within the Matter Plan tab, which will temporarily override this. It would eliminate the need to repeatedly create and delete the draft invoices in vain attempts to edit.
How often would you use this request?
On flat fee contingency milestone invoices produced, which happens often.