This plugin is for easy changing your old SItoA shaders (SItoA v2.xx) to the new SItoA version (SItoA v3.1.x).
Just select your materials and press the button. You can find the plugin under GET -> Material -> asi SItoAShaderV2to3
All connections and values getting restored to the old approach.

Known issue:
- be warned if you use shader compounds they get exploded !!

download:
   Python script - left mousebutton
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Software:
3D:Softimage, Python