SF86 public trust

It was SF85P i filled in 2021. I just submitted 86 for secret clearance, will part of my tier 4 public trust be used since i disclosed that in the form?

I held multiple contraxt position in the past and i just realized i forgot to mention one of them. What should i do? Wait and mention during the interview?

The public trust closed more than six months ago. Little will carry over from that investigation to the T3. Also, omitting a US federal investigation is not that serious. Don’t worry about it.