Hello Julia,
In my system, If I repeat output type, the inbound delivery get's re-distributed again. I would request you to repeat output type in Inbound Delivery in ECC first. you will be able to resend the inbound delivery. If it doesn't go, Try with VL60 to change the delivery information and save again.
If it still doesn't go, Reject the IDN in EWM then recreate Inbound delivery in ECC again.
Regards,
Sathish