From your screen shot of "Gerry" divers on lower left, I see two records with "Gerry" in the first name field, but I can't see the last name field for the second "Gerry" record (Sponsor = ERD). Thus, just from your screen shot, the portals could be correctly displaying the data that they should.
Assuming that the second "Gerry" does have a different last name, I'd enter layout mode and double-click the last name field in the lower portal and make sure that it comes from Divers_table 3 not Divers_Table or Divers_Table 2.
Two "Gerrys", and the lower portal goes to screen 3. Not sure how to get another screenshot into this but thanks for looking. If it will help I'll put up another "issue" with a new screenshot.
When I posted this as an "issue" instead of a question I assumed I'd hear from someone at Filemaker. Are you employed by them or just a kind soul who helps out stuck coders?
Thanks for the help,
You can upload images to a sharing site and then post links to those pictures in your replies. I recommend that approach as you can maintain context for those reading the thread.
Report an Issue is intended for posting possible bug reports. I doubt that this one is a bug as what you've set up is pretty simple here.
I don't get paid by FileMaker, but they did sign me up to be "community leader" some time ago... That's what that blue ribbion is supposed to indicate, (the ribbon was not my idea folks).