Will the bundles keep inventory sync?
Yes, when a customer checkout an order with our bundle, BYOB will edit the order to change a dummy variant to individual items. The original dummy variant will be removed and the inventory will be deducted afterward.
BYOB relies on orders paid to proceed with order-edit operations. if you are capturing payment manually, you have to accept payment to trigger order edit. Otherwise, the dummy variant will not be removed. If you don't track inventory of the individual items, it's also OK.