Will SCI Contract Maintain Poly?

I currently have a TS/SCI w/FS Poly clearance. I’m looking at new positions and 2 of my company Security Officers said that as long as I work on a program that uses my TS/SCI clearance, my Poly won’t go inactive.

I’ve always heard (been under the belief) that you had to use at least a CI Poly to maintain my current clearance level.

Can anyone confirm what my Security Officers say?