If the Address Type is changed from one format to another
IAS deletes data from fields that are not part of the new Address Type.

Address Fields			Address Types
		US National		US Standard	Canadian	Free Format	International
Address fields	Number			b	b
	Number extension			b	b
	Direction			b	b
	Street name			b	b
	Suffix (e.g., Rd., Blvd.)			b	b
	Post Office directional address suffix			b	b
Description				b	b
Building/Unit #				b	b
Lines	1	b				b	b
	2	b		b	b	b	b