Hi Zoe,
The best place to see an individuals history is to go to your Attendee List > Search for the correct record > Select the record > Invitee Status > View History. Here you will see the comprehensive list of changes of an invitee:

To see multiple invitees at once, within an event you can go to Reports > Invitee Change History > From here you can see each individual change a registration has gone through.
Hope this helps!
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Madeline Stalnaker [Designation]
Lead Client Success Advisor
Cvent
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