Q: How should the alternate name field be completed?
A: For item 8 - Enter the individual's also known as (AKA) name or the entity's doing business as (DBA) name if different from the name entered in Items 4-6. Do not include the acronyms AKA or DBA with the name. Do not enter AKA or DBA names in Items 4-6.
This is addressed in the "FinCEN Currency Transaction Report Electronic Filing Requirements" guide, Attachment C.