how import both previous year's returns into married-filing-jointly return ?

I just got married.  For 2018, we want to try filing a married-filing-jointly return for the first time (because it is probably best for us, plus we can use TurboTax's "what-if" tool to check if filing separately would be better).  This is Premier version of desktop product.

 

When I started the joint return, it asked if I wanted to import my last year's return and I did.   But I can't figure out how to now import my wife's return.