MDL version 1.7 does not allow to share materials in Painter or Stager

Hi, I'm just experiencing MDL Graphs in Designer and want to use them in Painter or Stager. The exported MDL file indicates that version is 1.7.

- In Stager a popup message saying this version of MDL file is not supported

(this popup also includes a link to "Learn about the Adobe Standard Material" version of .mdl used by Stager, but this link goes to an inexistent page...).

- In Painter, even if I add the MDL file in the \shaders\mdl directory, nothing happens.

As I cannot change the MDL version, I am stuck to use MDL only in Designer, what is quite useless.

Why this kind of feature is not maintained in version updates and when it will be available for the current MDL version ?