Payment requests need an update. We should be able to request a 50% deposit, but if the customer wants to pay the whole amount they can do so. The 50% is just a minimum payment, but they have the ability to pay more if they choose. I'm fine with them paying me the total balance up front.
Also, if we send a payment request, then the customer changes something on the invoice, and we update it, the payment request does not currently auto update. It has to be resent with the new correct amount. Those 2 things shouldn't be separate.