I belive they dont have a very good replacement for it even internationaly, Sx4 isnt going to do good in Pakistan, and Liana looks better then the SX 4, Kizashi is over all a bigger car, Their isnt a new Sedan car in India/Thailand or Indonesia aswell as a replcement for the Liana.
Paksuzuki is importing Liana to bangladesh in some quantity so i guess thats the reason it keeps on, Other then that iguess Paksuzuki wants to keep fighting with atleast one Sedan car so its good and a cheaper option over City/Corolla, and Swift aswell.
But yes, Worldwide Liana is replaced by SX 4, Paksuzuki has had a tradition to bring cars localy 4-6 years late, So once again we might see sx4 in pakistan when the world says good by to it, Same happened with Baleno and Liana,Swift,