Can I move a reservation from one block or hotel to another?
When editing a room on a "New" reservation, the "Sub-block" and the "Hotel" drop-down menus only show up when the room is the only one on the reservation. In other words, when editing a room contained within a multi-room reservation, the "Sub-block" and "Hotel" down-downs will not show up and cannot be modified.
Editing a single room reservation:
Editing a multi-room reservation:
If you're in a situation where you need to update either of these fields but cannot because there is more than one room in the booking, the best course of action is to clone the reservation. When using the reservation cloning feature, in the back-end reservation page, the reservation's fields will all auto-populate with the original information, enabling you to only change the fields you need to update.