Let k be a perfect field of characteristic p>2. Let 53c507787472e174b04d568f3" title="Click to view the MathML source">A1 be an Azumaya algebra over a smooth symplectic affine variety over k. Let c25125f" title="Click to view the MathML source">An be a deformation quantization of 53c507787472e174b04d568f3" title="Click to view the MathML source">A1 over Wn(k). We prove that all Wn(k)-flat two-sided ideals of c25125f" title="Click to view the MathML source">An are generated by central elements.