I now think a similar idea could apply to Finland.
Its 4 infantry can only move in the following territories:
Finland
Vyborg
Karelia
Norway
Sweden (not if the Axis are at war with the strict neutrals)
The Industrial Complex in Stalingrad (Volgograd) can move to another Original Soviet Territory - and still produce 6 Red Army Conscription Infantry units.
Note:
The IC cannot move and produce 6 RAC Infantry in the same turn.
See more information at pg. 21 in the G40 HRE rulebook.
Hi
The OOB rules regarding Mongolia are eliminated once the Soviet Japanese NAP is in effect.

Is Mongolia then treated as a Strict Neutral ? It only activates if it is attacked or another Strict Neutral is attacked ?
Thanks
Edit
Reading OOB rules some more and it seems that they would indeed just be treated as any other Strict Neutral beginning Early 1941

If the Japanese-Soviet Pact (Non-Agression Pact) is activated then Mongolia is considered a Strict Neutral on the same terms as any other Strict Neutral Nation.
Note:
The G40 Expansion Strict Neutrals also confirms this scenario (see below).