Modeling A Current Transformer in FEMM
Unless I'm missing something subtle in your question then....

Primary impedances Rp+jwLp are irrelevant for a current transformer - the current flows and that's it and if those leakage impedances are too high then it's a really badly designed CT. 

Magnetization reactance is also irrelevant if the burden is chosen to be non-excessive i.e. the burden shunts the magnetization inductance so that it can be ignored.

Just do some simple math on typical impedances and you should conclude what I've said above.