What exactly gets written into GO 3?
Once connected, these record types can be transferred: contacts, sales invoices, expense invoices, product cards, stock movements, sales prices, sales orders and dispatch notes. All of them are written into GO's own resources; Stokzone puts no intermediate table in between, so what you see in GO is your actual record.
The expense-invoice item is particularly useful and the one most often missed. Marketplaces deduct commission, shipping and fees from your settlement, and those amounts have to appear as expenses in the books. Tracked by hand they usually never get entered, and profit ends the month looking higher than it is.