That was just at the time when Partner been bought up by Elux as had Jonsered and Husqvarna. For what I remember, the Partner factory was closed, the production moved to Jonsered factory and for a brief period they produced Partner designed saws in both names. Later the brand Partner became the consumer brand, making homeowner saws, mind you a bit better than the China crap of today, but a long way from the professional Partners. Now we have mowers, snowblowers, earth tillers and whatever in Partner yellow, standard warehouse stuff, not the worst, not the best.
Jonsered saws of today are mostly the same saws as Husqvarna, except for the colors, the handles and some surface design.