They do not "take over" your inventory. You will need to migrate all of your inventory from the file you saved as an Excel file prior to migrating over to QBO. You will turn off the function in QBO "...tracking inventory quantity on hand". SOS Inventory will end up doing that for you...and so much more. Please read the information from SOS Inventory. They can give you all of the details on how to get started. SOS will work WITH QuickBooks Online...not instead of. QB will still be managing all of your accounting - invoices, payments, check writing, reports, etc., with information received from SOS, but SOS will manage your inventory, including Purchase Orders, receiving inventory from vendors, etc. This information will flow from SOS to QBO, but SOS Inventory will be the main program you use for anything inventory related. It is a complimentary software program. And the support you will receive from the technicians at SOS will SHOCK you. They are SO helpful.

I create Estimates, Sales Orders(something QBO doesn't even offer), and Invoices in SOS Inventory. Then I hit the "sync" button in SOS and it send all of the information over to QBO. There's more to the process than that, but this is a brief explanation. The two programs work together. The huge difference is SOS manages your inventory similar to how QB Desktop would do. I love the program...and the support from the people who work there. They are extremely well versed in using their own program.