Jflte vrs jfltecan vrs jfltexx topic

I thought after reading a few things that it would be possible to install cm12 jfltexx to my jfltecan b/c of the similar architecture and unification of cm12 for S4. It seems as if they re-branched the releases to separate variants and twrp wont allow me to flash an jfltexx rom. So am I doing something that I shouldn't be. Unfortunately there is still no rls for the jflte or jfltecan which is why I thought I would try the international.