Steps to recreate: 1. Create basket and add items 2. Receive shipment 3. Confirm that all items in shipment are showing up on the invoice created 4. Reopen the basket and modify one of the items 5. Re-close basket and confirm that all items in the basket are still showing up as received 6. Check the invoice, the item that was modified is no longer showing up in the invoice.
*** This bug has been marked as a duplicate of bug 34469 ***
Sorry Laura, I had missed you filing this one!
(In reply to Katrin Fischer from comment #2) No worries, Katrin!