Problem statement:
Is it possible to change the In-Transit Warehouse that is assigned to the Store Warehouse
Symptoms:
Is it possible to change the In-Transit Warehouse that is assigned to the Store Warehouse
Resolution/Work Around:

The In-transit Warehouse cannot be changed once it is attached to the Store Warehouse. The reason behind this is that the In-transit Warehouse might have been used in transactions and changing it may lead to data inconsistency.
Recommendations/Suggestion:
It is always recommended that when InTransit warehouse is created and mapped , it should be done as per customer requirement and it is one time activity.