1.0 Alpha =/= 2.0 alpha. 2.0 is using a game already produced, 1.0 was a unfinished game, it technically doesn't have to run in conjunction with each other ecause they stated it's going to take awhile to import everyone's data into 2.0 so constantly updating your data even during 2.0 testing makes no sense xD.
No. Alpha is stress testing as Yoshida stated.