Changing Country in Corporate Account form removes current address data without any warning, resulting in poor UX.

Steps to reproduce:
1. Login as admin
2. Go to Customers -> Companies
3. Start creating a new Company
4. In the "Billing address" section change the Country to "Poland" and quickly go to step 5
5. Quickly fill in the Region, City and Street field

Result:
The field values disappear once the form finishes reloading after country change.

Expected result:
See the comment below from Ida