My CoreFTP site manager just simply disappeared, we have 5 site configured and have been used in production environment for over 5 months. No one touched. I really can't find any reason.
before i had chance to see your reply, i've imported my archived SiteProfile. That is in our production environment, it's been there for over 1 year without any issues. Hope it won't happen again, if again, i'll follow your instructions.