As Primo administrator we have no tool
1) allowing us to know how many user comments are in the system (to have an idea on how this feature is used and therefore useful
2) allowing us to migrate user comments in case there is a change authentication system and metadata. For example, we switched from a case sensitive to a case unsensitive authentication platform and, since user comments in Primo are linked to user via the ID used for authentication, we could not export them, manipulate and fix the users, and reimport them.
Therefore a way to export / reimport them would be very useful. Content in the export could be encoded/encrypted to address privacy concerns.