How to control the DATA input of a LUT

I originally think that the inputs of a LUT share all local interconnect lines, that each input mux before DATAx could connect DATAx to any of local interconnect lines.

so i think when i simply change from DATAD to DATAC, it should be easy for QII to achieve fitting. It seems in fact that the input mux does not connect all local interconnect lines,

so a local connect line may be connected to DATAD input mux, but not connected to DATAC input mux, that DATAD and DATAC are not exchangable in this situation.

so i need to use wildcards in routing channel to ease QII fitting, then my purpose will be reached(that is, i could change from DATAD to DATAC freely).

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I don't have an answer for you, but I'm curious as to why you want or need to do this.

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Well, it is an interesting thing for me, may be i will not use this technique forever, but it may help me think other problems.

Thanks much for your attention.

Best Wishes,

ingdxdy