Pricing feature per Job

A payments feature per job (not only per invoice) that automatically adapts the cash value equal to the contractually agreed upon payment percentages at the beginning when a change order goes through..

I.e

$10,000 Original Contract Price

40%/30%/20%/10% Payment plan signed on

$4,000 Deposit paid

$5000 Change Orders Approved so $15k new contract price

Then all payments adapt moving forward to still have a new remaining balance of 10% of the new contract price by the time you get to the end of the project..

Right now the payments do not change on the original contract when a change order is put in and it requires you to send a separate invoice to get it paid otherwise you will end up with a larger remaining balance at the end than what you planned.