Ok thanks.  Here is my updated understanding of what to do (documenting this here since it doesn't seem to be in the ProConnect documentation):

• Enter the disposition as Date acquired/sold blank. 
• Override long or short term.
• Schedule D -> Reported on: "1=Form 1099-B but basis not reported to IRS" (or option 2).  Check "Summary from attached statement". 
• Have to attach transaction details.  "Electronic Return File Attachments" page and linking it as "46 - Form 8949 Exception".