Phones in user profile are ok and will not change, only phones on items will disappear, as veronika use own table for storing phones.
Best way to migrate is to:
1) Export fk_i_item_id, s_city_area columns from table t_item_location
2) In exported .sql modify naming of column s_city_area to s_phone and table name from t_item_location to t_item_veronika
3) Import this file back to table t_item_veronika