We're using A2X to link our Shopify store to our Xero accounts. The COGS reporting doesn't link automatically into the costs held in Shopify, which is very frustrating, and it also doesn't support category tracking. I'm surprised that neither feature was part of the minimum viable product for A2X as both seem like a basic requirement to me. Apparently the automatic link is under development, but there's no information from the support team on a planned release date. We're looking at other options now.