It is my understanding that Pro has retained the "see related records button" just like ArcMap in the table view (here's the Pro help page). Only I can't find it anywhere. I can get access to related data through the attributes panel, but I can't figure out where the heck the button is in the table view. I am assuming, because it is discussed in the help, that the button exists, but I'm not sure. (FYI - I'm on 1.3). I'm working in a .mxd I'm certain has relationships too. Can anyone help me out? Screenshots appreciated.
It is in the ribbon. Select the records you want, then go to the Table > View tab and there is a Related Data button:
You can also turn on automatic related record selection through the attribute table:
Ahhhh, I figured it was tucked away somewhere. I'm so used to it in the table itself. Got to love ribbons. Thanks Joshua!
Glad to help. For future reference, it works best to make sure questions are marked as questions, instead of discussions like here.