Hello,
I have been working on 2 projects which import all customer, invoice data to xero accounting and i'm sure can help you to build out the tool for sync your data with xero. Please consider me, i'm happy to discus on details with you.
My s.k.y.p.e is ngocthanhit.
Also, do you want to see the demo of connecting and import data to xero? i can setup a demo for you.
Thanks
Best regards.
Thanh