We are in the middle of Integrating our Magento website with the New Google Trusted Seller program and it requires us to submit a daily updated shipment feed with order number, tracking number, date, etc. Also it requires a Order Cancellation feed. These need to be written in tab-delimited text file format and must be able to update daily automatically. Google Merchant center will then pull the feeds from our website address where the feeds are located. If you have any questions please let us know.