While this won't be a complete explanation it looked like something that may get you started. I noticed a new TechNote that described a few specific items and a few general items about Calibre and Star flow. Here's a link to that TechNote:
Better look in the other EDA hotline.
- for the calibre side: run LVS with no errors, then run calibre with a query_runset (57lines)
- for the other EDA tool: a lpe.cmd command (to run starrcxt) and a .nxtgrd file
query_runset is depending on the lpe.cmd and .nxtgrd infos.