Well, no. The newer systems are not being imported. That's the point of the article. Falling-out over copying? The Chinese co-produce the Almaz S-300 PMU/SA-10/SA-N-6 "Grumble" under license.
The Russian MKB Fakel S-300 PMU2 "Favorit" was not part of the deal. That is the missile that supposedly can intercept hypersonic targets travelling at 6000 mph and altitudes up to 100,000'.
The Almaz/Fakel S-400 "Triumf"/SA-20 is a smaller missile compatible with the launchers used for the S-300/SA-10 system, with the advantage that a container/launcher holding 4 of the S-400 can be loaded into a single tube of the four-tube S-300/SA-10 erector-launcher. Systems integration and interoperability have been built in. This is an extremely potent missile system with performance claimed up to the limits of the ABM Treaty and an effective range of about 70 miles, compared to (d/o variant) 90-120 miles for the original S-300PMU/SA-10.
The discontinuation of production of the older, 90's models of the SA-10 series was prompted by Russian defense retrenchment during the later 90's.
Cold link:
http://www.fas.org/nuke/guide/russia/airdef/s-400.htm
http://www.fas.org/nuke/guide/russia/airdef/s-300pmu.htm
According to this article, Russian won't sell them because China will make fairly close copy or some little better, and market them overseas.