Wiki Page author name is getting updated to the Community Admin User


We have a number of Wiki Pages on our community website. Recently we have found out that for few of those wiki pages, the content author name is getting updated to that of the Community Admin User's name. On further triage, we found that an update has happened to those pages at the same time and this has reset the content author name to that of the admin user. All those updates happened at the same time. This can be seen from the Revision History of those wiki pages.

What could be the reason for this update? Is there any Telligent in built job which iterates through the Wiki pages and update it?