@HM2019 

I use multi-currency and stock control. Both things MoveMyBooks fail to support.

You can buy another 3rd party service to convert data with multicurrency transactions.

Regarding the inventory, QBO's API has been updated and it makes conversion difficult. However, we can bring inventory details like name, code, description, sales account, purchase account, sales price, purchase price, etc. We import all the items as "non-inventory" type in QBO and after the completion of the migration, our clients needs to manually change the type non-Inventory to Inventory and add the quantity on hand manually for each item.