Unable to apply Custom Icon to Flat package

Hi, Can someone tell me the how to apply custom icon to a flat package. So far I successfully managed to apply the custom icon to the expanded flat package. But as soon as I flatten back the expanded package, then icon converted back to default icon(opened brown package/box). Is there any other way to apply Custom Icon to flat package. Thanks and regards, Khushneet _______________________________________________ Do not post admin requests to the list. They will be ignored. Installer-dev mailing list (Installer-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/installer-dev/site_archiver%40lists.... This email sent to site_archiver@lists.apple.com