Complex sentence: From 1993 to 1997 IAAF classified the ISTAF among the IAAF Golden Four meetings, from 1998 to 2009 it was part of the IAAF Golden League.
Split into simpler sentences: From 1993 to 1997 IAAF classified the ISTAF among the IAAF Golden Four meetings. From 1998 to 2009 it was part of the IAAF Golden League.