I agree with all of the above. I have to maintain a separate database because of the basic stock management features that are missing in Linnworks. Stock Up and Stock down (viewable transactions...not just the process) and book out stock for FBA. How can I check what was sent to Amazon (in Linnworks) versus what was booked out to Amazon (on Amazon). Last minute changes to Amazon sometimes get missed. Errors happen and you sometime need to cross reference what Amazon say they have and what you think you sent..