User Defined Fields- their field name as two words please, not one

User Defined Fields- their field name as two words please, not one

I'd like to be able to use Annual Income.  Not Annualincome, nor Annual_Income.  When I export to excel, it makes a total mess all clumped together.  Also, instead of user fields importing to AE from Desktop WITH the data from Desktop, a new set of user fields was created with either U_ or zz_ in front of my field name.  If the field name was in Desktop with data, and the same field name is in AE, why create new ones?  Just populate/migrate the data as is.  Again, it is a mess to clean up and seems  needless.