Although I firmly stand by my belief that this is a bug and should not be considered a feature request, ReturnCenter support seams to disagree with me.
The 'Sku' column in the export report is blank when ReturnsCenter is hooked up to a Magento 1 store. Specifically Magento 1.9 in my case.
ReturnsCenter already has the ability to read the skus (obviously) given that it reads orders correctly, yet still does not write the sku to the appropriate column in the report. Would love a fix for this, the report was one of the entire reasons that we went with ReturnsCenter. Thank you.