Hi Ken,
I have been using the Starry Night format for importing objects. Works fine except in cases such as -00 56.63. The -00 which is, of course, numerically equivalent to +00 makes the remaining minutes and seconds become positive which puts things out of my FOV.
Since SGP doesn’t support imports from C2A, I am using a format modified for me several years ago by Philippe Deverchere (C2A author). He decided to use an equivalent to the Starry Night format. It works fine except for the case I mentioned above which I believe would be a problem for Starry Night importation as well. It would be a lot better if you could directly import the C2A format as another option in your import list.