What does Merge Leads mean in Activity Log

[Frank_Breen2]

In my Lead Activity log I see the following item:

It doesn't really tell me much when I click into it:

Is this something Marketo is doing or is it something else as we don't current do any automated/manual merging?

I asked because the lead effected changed from good data to bad data.

[Anonymous · Accepted solution]

Hello,

I assume it's merging the former anonymous lead with the lead newly created. In details, it's written "Anonymous Source: true" and that 1 activity has been merged from it.

The former anonymous lead had only a visitor_id (from the cookie used by munchkin script) and some activities (here only one).