The horizontal alignment in the input file consists of a right hand curve ONLY, defined by 3 points - this is standard HALGN data, and if you do not know how to read this data, I would recommend reading the help file.
It IS NOT an IP alignment. It is an arc, and therefore cannot be imported to Horizontal Quick Alignment. As suggested above, use Alignment (retrieve alignment) to edit this alignment.
It IS NOT an IP alignment. It is an arc, and therefore cannot be imported to Horizontal Quick Alignment. As suggested above, use Alignment (retrieve alignment) to edit this alignment.