When Creating a Import Format in FDMEE, how does the Data Load Mapping work...it's confusing.

I am using EBS,

There's 5 segments and it will not allow me to map Segment 1 to the Accounts Dimension, it forces me to select a Segment 2, Segment 3....Segment 5

On row 2 it's the same thing, I can't just map segment 2 to the "Company" dimension.  I am forced to select a Segment from all 5 Drop Downs...and map to the Dimension listed on the same row.

Thanks,

PR