This forum is only for reproducible bugs with csf and lfd (i.e. not iptables problems, lack of understanding how to use a feature, etc). Posts must be accompanied with full technical details of the problem and how it can be recreated. Any posts not adhering to this, or not considered bugs, will be moved to the General Discussion (csf) forum.
That was fixed a couple of years ago in v5.00. The alert templates are not overwritten when we change them as they're customisable and so any changes by the user would be lost. You have to read the changelog for changes if you want to update the email templates to their latest versions.