Amazon Canada & Mexico

Amazon makes it super easy for us to take our US Amazon items and list them on amazon.ca and amazon.mx. The problem is that these orders don’t show up via GWO. Is there a way to get these marketplaces to interface with our current webstore? Right now we only get an occasional order from them so it’s only a minor inconvenience to cut and paste all the data from Amazon into RMS, but would be much easier if we had an automated workflow like we do for the US Amazon store.