Reserve item - unable to remove temporary location

Overview:  A user should be able to remove the temporary location  from an item that is on reserve, and have that temporary location removed from both the reserve record and the instance/item record.  Currently they can change the temporary location to another temporary location, but not remove it. 
Steps to Reproduce:

1. Log into some FOLIO environment as User X
2. Find a course with a reserve item that has a temporary location assigned (or create one if there isn't any)
3. Select the edit reserve action
4. In the "Temporary location" box - select (None required) 
5. Click save and close
6. Note - the value in the temporary location field does not change
7. Click through to the item record - the value there has not changed either. 

Expected Results:

Removing the temporary location from an item in the item record would remove the temporary location from both the Reserve record and the inventory/item record. 

Actual Results:

Nothing changes

Additional Information:
URL:
Interested parties: