I am hoping that David will see this question.
The official statement by P1 is that in C1 9.2 the Pentax K1 pixel shift files are not supported. However C1 does open them, applies a very nice color profile to them and only appears to be off on the sharpening algorithm being applied. Net, if you apply a bit more sharpening than the normal amount the files appear to be fine. The thumbnail view seems to have a problem at times showing the adjustments that have been applied but the files export clean.
Just curious on this as it appears the support is much closer than I had thought?
Paul C