I used wbs/Network/activity/milestone from project system to apply on sales order for milestone billing
I configured the billing block you can see below screen shots in yellow
I ran sales order and billing below screen shot in blue
I set the billing block but when I tried to run billing
the block is not happening and whole milestone considering in billing
Please take a look if anyone has solution or answer it is very much appriciate



Below are the screen shots I did configuration


