Looking for advice on how to establish facts from logs

Hi Andrew, the forum is operated by a large platform of the size like Facebook or Google and it’s their forum for customers. The whole migration process took about a full year.

They firstly run the new forum in parallel, eventually, they started inviting “beta” testers and the last users were migrated in summer 2023, when the Discourse forum was officially disabled and the new custom forum became the only forum.

So this is not someone running a forum. I am wondering, if they migrated a forum with millions of users and did not make any arrangements to carry over historical suspensions, would this be establishable through a forensic expert or would the expert just come back and say all data prior to 2026 was deleted, destroyed and we can’t establish anything that happened to the accounts or software, we only have past 3 months of records. And would a company of the size of Google able to come back with a position like this.