You can continue the save game.
What we did:
1. Resolve the turn using Patch2, Japanese player saves the game and send file to US player to watch.
2. US player watches the replay in Patch2.
3. Japanese and US player updrades to Patch2 Hotfix
4. Japanese gives orders using Patch2 Hotfix, sends file to US player
5. US player loads and gives orders.
BTW,
I noticed that I cannot access my stacked TFs in the hex anymore.
When I click on it, it brings me to the Base screen, not the TF list.
Only way to go though the TFs now is via the bottom panel.
And also since Patch2, clicking on the airbase icon in the hex also has erratic behaviour.
It brings me to the squadron list but if I click a squardon it brings me back to Base sceen sometimes.
Started a tech support thread for this:
tm.asp?m=2326075&mpage=1&key=�