Writing Attributes back to UKG

We have the need to write back Employment.UDField05 to our UKG instance after a value is assigned to an attribute within Active Directory. From what I am seeing, only the email address is available for write back into UKG. Could someone please confirm whether additional attributes can be written back via ConnectToAD?

The Mail field mapping is the only mapping that offers two-way binding.

At this time no other attributes can send data back to UKG.

Connect to AD can not update Employment.UDField05.