Hi, 

One of my odoo user reported me that he just clicked "Cancel Transfer" from reverse transfer order, but causing all previous delivery order status from transferred to cancelled..

The Sales Order is planned to transfer out 220 PCS of items 

First delivery order transferred out 45 PCS

Second delivery order transferred out 10 PCS

Third delivery order transferred out 25 PCS 

Last delivery order transferred out 1PCS (He wrong input 0.35 Quantity)  - I advised him reverse transfer this delivery order

And he cancelled the reverse transfer then causing all transferred stock operation status to cancelled and Sales Order status to Shipping Exception.

Can anyone explain to me how it happen? 

Forgive my foolishness question, I just couldn't understand the flow that causing this type of issues.