Hi All,
So, you can send a check that is in USD if the vendor is CAD and you also have CAD vouchers to be paid by allowing GP to handle the conversions. GP will convert the USD to CAD using the rate in your system. This happens when the currency being converted is your functional currency. The same would be true no matter if your functional currency is USD or CAD. The edit list may only be showing you functional amounts too. I do not remember off the top of my head if the standard edit list is by default only showing functional, not originating.
Either way, I'd suggest adding a currency column in your edit check batch window to make sure you are selecting invoices that are all of the same currency if you do not want the conversion function to automatically happen. You can right click on the headers for the selection lists, and add the currency column there.