chachin, replace the existing "InfoTrackerSave" alias with this one and retry:

alias -l infotrackersave {
var %e = $event
if ($hget($+(IT,%e))) {
hsave $+(IT,%e) $+(IT,%e,.hsh)
}
else {
hmake $+(IT,%e) 100
hsave $+(IT,%e) $+(IT,%e,.hsh)
}
}