This would happen in the "Validate" routines, which get passed into the DBSQL.pm and DB_Utils.pm files.
All the data is checked, and the indexes updated at that point.
I would wait digging around though, since that code is almost sure to change in the next release, and you might create some incompatibilities in your database that would be hard to fix. (Not likely, since you could just do a re-index, but it's possible.)
http://www.postcards.com
FAQ: http://www.postcards.com/FAQ/LinkSQL/
All the data is checked, and the indexes updated at that point.
I would wait digging around though, since that code is almost sure to change in the next release, and you might create some incompatibilities in your database that would be hard to fix. (Not likely, since you could just do a re-index, but it's possible.)
http://www.postcards.com
FAQ: http://www.postcards.com/FAQ/LinkSQL/