ShareGate added me everywhere as Site Collection Administrator - how to undo?

Hi Ivan!

I just wanted to chip in on this since I'm a part of the Sharegate team.

As you mentioned, you can directly run the Remove Permissions operation by right-clicking on the individual site collections from the Explorer view. However depending on the number of site collections you'll want to run the operation on, this can sometimes be more easily achieved using the reporting tool.

It can be used to pull up the list of site collections that fit your desired criteria, select them and then run the Remove Administrators operation on the selection for your desired user account.

In case anyone else in the thread was wondering why we'd add your account to the list of site collection administrators despite it already being a global admin, this is because quite a few of our client-side operations require the SCA permission level explicitly to be run.

Finally, if you want to avoid the addition of your global admin account as a site collection admin by Sharegate, this option can also be toggled on/off from the Settings section of the reporting tool.