# create tangible product with enabled inventory tracking
# place an order with that product from Front-End
# confirm, that order ended up in `Backorders` tab in {nav In-Commerce > Orders} section
# open product for editing and go to `Inventory` tab
# add some (where some > needed qty in created order) product qty
# save product record
# confirm that order was moved from `Backorders` to `To Ship` tab in {nav In-Commerce > Orders} section