Thanks @KarthikRaja1388

Seems to be fixed, can't reproduce in demo or my own installation

This is happening to me too, even when using Only track visits and actions when the action URL starts with one of the above URLs.

So far I tried invalidating the reports and regenerating them (which took almost 4 days to no effect).

Any clues on how to solve it?

We currently track a few moodle installations from a public university (around half a million students) and with the current epidemiological situation people started having time for statistics...

In the example it shows that the user was first seen 4 days ago, but the visit log show an entry from one year ago, on another site.

I tried deleting all the caches, doing mysqlcheck -o and when doing:

SELECT * FROM matomo_log_visit 
LEFT JOIN matomo_log_link_visit_action ON matomo_log_visit.idvisit = matomo_log_link_visit_action.idvisit 
LEFT JOIN matomo_log_action ON matomo_log_action.idaction = matomo_log_link_visit_action.idaction_url 
LEFT JOIN matomo_log_conversion ON matomo_log_visit.idvisit = matomo_log_conversion.idvisit 
WHERE idvisitor = UNHEX('ee9a851e8ae7131c');

It retrieves all of the correct results that are shown (not the incorrect ones)...

Any clues? I would really hate to loose 3 years worth of statistics and then have it happening again...

@dktcoding this sounds like a different issue and I recommend you create a new issue for this. We may need access to your Matomo if possible to understand things. Like you could create a user with view access for us and send us the credentials to hello at matomo dot org.

This seems fixed, @KarthikRaja1388 please re-open if you can still reproduce this