Hello! We use avatax as our tax provider and recently we adopted the prebilling beta. The problem we’re facing is that if we’re prebilling today for a subscription that starts in the future, instead of our normal flow for an invoice where the invoice is allowed to stay open for an hour so that avatax can add tax line items, the invoice is closed immediately, completely breaking our tax integration. I tried to find a way to force the invoice to stay open in this scenario but it doesn’t seem to be possible, hoping you guys will consider adding support for this 
thanks!