There is a way to search in the Reservations screen with dates to filter stock that may need to be transported or moved.
1. In Reservations select left from Inventory and right a warehouse to ship it to.
2. Select instead of Fixed date a period e.g. July 2019:
3. Save the reservation and see that the ETA = July 2019:
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4. You can find back in Deliveries all reservations from stock to stock with an ETA before August 2019 like this:
Filter conditions
from-warehouse+ (the + means there is a from-warehouse)
to-warehouse+ (the + means there is a to-warehouse)
progress=reserved
ETA < Aug-2019 (when you do not specify an exact date it will behave as ETA < 1-Aug-2019)
This type of query should give you the information you need.