The CSV file has the Surname now (column G) and the Surname at birth (column H). If you need the full name at birth, you could insert a column and paste in the formula =D2&" "&I2 [note that these examples assume that you insert the new column between Full Name and Given Names]. That will work as long as they have a surname at birth in your family tree. If you'd like the name to use the Surname now column if there isn't anything in the Surname at birth column, you could do something like this: =D2&" "&IF(ISBLANK(I2),H2,I2). That will still look a little funny if you have a blank given name.