if you can't find those results on infoesgrima, you won't find them anywhere else...
unfortunately, not even FIE itself are keeping track of those regional events (for them, it looks that the only American competition are the Pan-Am Games and the Pan-Am Champs, no other event is recorded on their results page)...
last night I tried to find out something about those Puerto Rico tournament, but I could only find news about the single Countries' performance in their local news, nothing more than that...even the Puertorican Fencing facebook page does have many photos and comments, but no results summary nor a shot at the table draw (with results) as they usually do during the world cup events round by round...
I also tried by changing the parameters in the url of the existing results, but nothing came out of that (just a Venezuelan blog page with the same things of infoesgrima, without the last 2 team events)...