Does PayPal cashback work when using a PayPal discount coupon?

Hello Dimers,

I have a PayPal discount voucher worth INR 300 that I received by placing an order on Box8. I want to place an order on Freshmenu and PayPal has the same 100% upto INR 300 offer even there. So, my question is if I place an order worth INR 300 on Freshmenu and pay it through the Box8-transaction discount voucher available in PayPal already, will I get the cashback for the Freshmenu transaction?

Any Dimers can help me out here?