so my guess is 1LfqTBBFP the BTC address on topic here.
I'm not quite familiar with bitpay but I read that bitpay wallet user owns the key
if you have its privkey meaning you are in control of the address
you can simply use the same privkey and import into your BCH wallet
you need to ask bitpay how to extract a privkey of your specific address
Oh wait. Good point. Im not sure if OP meant paid invoice or sending into the mobile wallet.
I think that he should address this, before we proceed with the thread.
If it's a bitpay invoice, only bitpay can access the funds but if he was talking about mobile wallet, then that would be alot of different.
It was not an invoice from bitpay. I just needed some BCH on my Bitpay wallet to pay for something else.