On Wednesday, July 19th, we identified an issue resulting in some activity duplication. Our team promptly deployed a fix on July 20th, and cleanup is underway, set to finish by Sunday, July 23rd.
No need to worry; you likely didn't notice anything. If historical journey stages are of concern, a partial rebuild is available as an option by contacting Support.
Thank you for your understanding. Reach out to firstname.lastname@example.org if you have any concerns.