From: Belgium, residing in TX-USA
Basically, tho one can note in the preface of the scenario which version the designer used (3.4 or 3.2)....
Those scenarios designed specifically for use with the new supply features introduced in 3.4, will have that mentioned in the scenario notes.
Elementary my dear L'zard
But as rule of thumb I'd play everything before 3.4 with "New supply rules" OFF
On the other hand "New turn order" can be turned ON for all scenarios!
Let's recap that feature as described in the 'What's new?'
I. PLAYER-TURN EQUALIZATION (AKA “NEW TURN ORDER RULES”) (Optional):
There is now a choice to use equalized player-turns. The old pre-turn calculation method used to do all the calculations for supply, recovery, and other items at the start of the first player turn. This was a bit unfair (usually to the second player). The new turn order splits that processing into three parts. Air-Combat, Events, and Weather effects still happen at the beginning of the game turn. But everything else now happens at the beginning of each respective player-turn instead. Clouds even move between player-turns – just without weather effects.
Note that equalization will mean that enemy units cut off from communications in the friendly player-turn will be
unsupplied in the immediately following enemy player-turn regardless of side (previously an unfair advantage for side-two). Also, note that movement recovery is done twice for each side (start of each player-turn). This will clear the “Retreated” condition for both sides during their own player-turn (previously an unfair advantage for side-one).
It may even make use of reserve deployments more palatable to players.
Furthermore, neither side is assumed to have 100% visibility into their own territories during the enemy movement phase (previously an unfair advantage for side-two). Rather, detection of enemy moves into friendly territory will
now depend upon the friendly Theater Recon Level or friendly units. Therefore, enemy units will now be better able to slip around either player without notice.
TOAW Retrofit Dude