No problem. Unfortunately as with many programs the registry is used for saving and loading information - and with more than one copy it could get very broken/confused. In WOFF we have separated things more in the registry so in theory it may be possible to run Phase 3 along side too if necessary - but we have not tested that at this time.

You are not the only one to feel there's a need to have both phases operational at the same time. The only use need for Phase 2 is an elevated level of enemy contact ( I can see no other)

This is easily obtained in Phase III by simply enlisting a few pilots in May 1918, you'll shortly wish your father never met your mother