http://amateur-boxing.strefa.pl/ only lists Duals USA select-Ireland select - Spokane, USA - March 13 1986 No mention of a return meeting in Dublin that year.
The problem with these 'select' matches is that they are basically club fights with one team travelling across the water and being branded with an international theme. I remember the Holy Family club in belfast travelling to Philly to fight Joe Fraziers club about 20yrs back and they tried to bill it as an ireland v America kindas thing when it was really just 2 clubs. Darren Corbett KO'd some guy called Green, who was highly thought off at the time, at heavyweight and Smokin Joe tried to sign him up. Im at a loss at how we are going to get this confirmed or denied one way or another