POST /rest/V1/shipment does not change OrderItems qtyShipped

[ddeppner]

Steps to reproduce

1. Create a new shipment in the Admin screens and add items from a previously placed order to it.
2. POST to /rest/V1/shipment to create a new shipment with the items from a different order that has previously been placed.
3. select item_id,qty_shipped from sales_order_item;

Expected result

1. sales_order_items qty_shipped field should show 0 for all items affected by either Can you commit to repository a folder dev/tests/static ? #1 or BUG FIX - Uncaught exception when accessing admin with none existent use... #2 above.

Actual result

1. qty_shipped is 0 for shipments created in the Admin panel.
2. qty_shipped is NOT 0 for shipments created via the API

If there was an API call to allow me to manually change the qtyShipped via /V1/orders/items/{id} then I could solve this, but there are only GET options for salesOrderItemRepositoryV1.

[ddeppner]

Because the qty_shipped is not updated when creating a shipment via API, the "Ship" command is still available in the Admin screens, and a user can create another shipment with the same items in it, creating future problems.

[NadiyaS]

Hi @ddeppner,
thanks for reporting this issue. It is already being tracked by MAGETWO-50295 ticket.
This issue will be closed as duplicate of #3307.