Hawaiian's map contradicts this post and the PBN article, and has interisland in lobby 2 and mainland in lobby 3.
http://img.s-hawaiianairlines.com/~/...ap-Level-2.png
I wonder if they'll move the Plumeria Lounge. International business class passengers will now have to check in in lobby 4, then make their way over to the interisland terminal to visit the lounge, then back to the overseas terminal with an extra agriculture check, for their flight.