Is chin implant removed in all cases before orthognathic surgery?

I had a chin implant 2 years ago but I may undergo orthognathic surgery to treat my sleep apnea over the next year. I’ve heard many surgeons choose to remove a chin implant at the time of surgery, but I feel that the implant would still be beneficial for my profile despite the anterior jaw movement. Are there any situations where the chin implant can stay? Or is the implant removed in almost all cases?