IF/IF... at all possible, of course.
The Friends List to be exported to a text/csv file for subsequent editing and importing it again.
This in an attempt to clean it up a little.
For example: over time there are dozens of email addresses in it with the same domain, but with random user names. Those are from a specific site.
That site is hiding the user name and uses the site as domain name, like,
Obviously this could be replaced with *-at-domainname.com