Export to Native not Exporting Horizontal Alignment

Question

I am trying to export some CL alignments and Curb Return alignments to the gpk used Export to Native. I got two of my curb returns to work, but not the other two. I also have been trying to export the sidestreet alignments and they will not export. 
 All lines that I am attempting to export have names and active profiles that have names. The two CL sidestreet alignments are Intervals, but when I try to remove the intervals, the whole line disappears (which may be another problem, but I should still be able to export the interval). The two curb return profiles that wont export are arcs just like the other two that did. 
 The odd part is I did get all the of the vertical profiles to export, but the horizontal is missing. 
 Has anyone experienced this? 
 Thanks

Vern Danforth · Answer

The only time I have seen this is when the alignment has only two PI's. This is a limitation and I would construct a middle point with the insert point tool using mid point snap.

Zachary Billings · Answer

Though it doesnt entirely fix my issue, there is a way to import an element with only two PI's. The element must be drawn using Complex by PI. Then, even if you only use to PI's, you still have a complex element that can be imported.