Iris was de-aged when Barry was resurrected. They should've already had the Tornado Twins before Crisis on Infinite Earths. Barry came back for Crisis where he died. Iris stayed in the future, raised Don and Dawn, then brought Don's son Bart back to the present day.
Flashpoint erased all that, but it must've been restored by the time of Rebirth's Flash #50, which is when Bart returned. Soon after, the couple remembered their marriage... and Wallace found out that he only exists because of the timeline changes (he's been inserted into older Wally's origin).
They should be married again, but Bart doesn't prove it, as it's entirely possible that he has become a remnant. Conner Kent has that problem currently, people not remembering Superboy.
Wait a minute... why is Yolanda there? She wasn't in that JSA run because she died in the early 90s. Was resurrected in Doomsday Clock, but that doesn't mean she should be inserted into the 2000s JSA team.