A proceeding pursuant to this article is a part of the original criminal action and not a separate action. It displaces and incorporates all trial court post-trial remedies except post-trial motions and habeas corpus. If a defendant applies for a writ of habeas corpus in a court having jurisdiction of his person attacking the validity of his conviction or sentence, that court pursuant to this article shall transfer the cause to the court where the defendant was convicted or sentenced and that court shall treat it as a petition for relief under this article and the procedures of this article apply.
A.R.S. § 13-4233