To Bulk Move a route in Temporary Mode follow these steps:
First select the 3 dots in the upper right hand corner and enabled Temporary Mode
With Temporary Mode enabled, select the 3 dots on the route you wish to update and select Bulk Move
Select which stops (or All)
Select which Route to move to
Select what date (if the date is different)
This is a temporary one time change to the route that will not affect the routes moving forward.
**Reminder: Make sure to disable Temporary Mode once you have changed your route