The first API function the Import Wizard calls is CMA_Initialize. This allows for an import filter to perform any custom tasks at the beginning of the filter process.
The next API function the Import Wizard calls is CMA_LoadPackage, which passes the address of a CMA_PACKAGE structure. This function fills in the structure with the name of your source software package, the names of the data files to look for when searching the user's computer for the source system's data files, and the methods to use to track updates. For more information on how updates work, see "Frequently Asked Questions" later in this document.