We recently tried to comply with GDPR data deletion request for one of our clients and stumbled upon a major issue with Invision's anonymise attributions ability.
As part of this process we must delete the users from the forum.
We want to keep conversation flowing and so we want to anonymise attributions which is great and generally understood to be an acceptable GDPR approach/
However, many users like to use their full names as usernames, this is Personal Identifiable Information.
So you delete the user and the username is changed to guest, great!
However, if anyone has "quoted" that user then the name still appears throughout the thread leaving a huge data task cleaning up all quote references.