I just received notice that Effective June 18, 2018, federal guidelines removed the requirement for a subject/personal interview. The change was due to a revision to the FIS and Tier2 investigative requests. However agencies are now required to obtain responses to a Supplemental Questionnaire form in lieu of the interview.
Guess what the supplemental questionnaire form has most of the same questions that are on the SF86.
The only time a personal interview will be conducted is if there is an event that occurs during the investigation that necessitates a triggered interview.