You are correct, the 0.7 factor is no longer applied by the (ASCE-7) Seismic wizard. We changed this purposely, to be consistent with the (ASCE) wind load generator.

The 0.7 (seismic factor) and 0.6 (wind factor) should be applied to the appropriate vector in the load cases. This is because for structural purposes you need 100% of the load, while for stress purposes you want the factored (reduced) load.

The load case setup (assuming seismic in U1) would be:

n1) W+P1+T1+U1 -----> for structural
n2) W+P1+T1+0.7U1 -----> for stress

n3) W+P1+T1+WIN1 -----> for structural
n4) W+P1+T1+0.6WIN1 -----> for stress