It's almost become a cliche to point out that the siberian divisions weren't a big deal. It was something like less then one division took part in pushing the Germans back from Moscow?
Overall three divisions came in time to make an impact. Not much if you think about it.The Sibirian divisions saving the day makes a nice story but is a myth.The Soviet soldiers along the Japanese border in Manchuria. As soon as Stalin was satisfied Japan would not attack many of those troops were transferred.
Oh yes, they were.No, they weren't transferred anywhere. There was ~700 thousands Soviet soldiers in the Far East at June 22, 1941. There was more than 1,3 million of Soviet soldiers in the Far East at December 1, 1941 (and about 1,4 million in August 1942). So who was transferred?