Jedi Counseling pisze:

Q: Having read many of your rulings, I've learned that when a lightsaber strikes something with a cortosis weave, it immediately shuts off. But from what I've seen in other Star Wars games such as Knights of the Old Republic and Jedi Knight II: Jedi Outcast, the main character fights opponents who use cortosis swords or armor. In Jedi Knight II, Kyle Katarn fights numerous dark Jedi who are wearing whole suits of cortosis armor, and his saber never shuts off. Should I use your rules for cortosis or theirs?

A: Actually, a better interpretation would be that there are different types of cortosis weave -- perhaps made using different cortosis alloys -- that are resistant to a lightsaber's damage instead of simply shutting it off. Such armor obviously exists, given our previous ruling on Jedi battle armor (from the Power of the Jedi Sourcebook) keeping its DR vs. lightsabers. I'd say this alternate version of cortosis weave has the same cost as normal cortosis weave. (For details, see chapter 4 of the Dark Side Sourcebook).

Similarly, a "cortosis" sword might just be an alloy that has some cortosis in it, allowing it to keep its DR vs. lightsabers, much like a Sith sword. I'd say that this adds 5,000 credits to the cost of a melee weapon and requires a Craft (appropriate weapon) check against DC 25, using the rules for making cortosis armor.  

So, that's my ruling: The cortosis armor in the PC/console games is an alloy that allows the armor to keep its DR vs. a lightsaber, whereas the cortosis weave described in the roleplaying game until now (originally from the novels I, Jedi and Vision of the Future) is a different alloy that shuts lightsabers off after a hit.