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Wed Apr 22 2015 12:34:00 GMT-0700 (Mountain Standard Time)
In some cases, the same OrderLineItem is appearing twice in GetOrders api i.e. once as a single order, and then as a part of combined order.
If you are also facing this issue, please file a support ticket here :http://developer.ebay.com/support/developersupport/default.aspx , or report in the forum here : https://forums.developer.ebay.com/spaces/8/default.html