I’m on 8.0.16
We I rename items by using FIND-REPLACE function in perspective, when I rename a tag it change my tag datatype into a folder object.
I opened an internal ticket to get this fixed.
It doesn’t actually convert your tag to a folder - it makes a folder with the given name and moves your tag into that folder, while keeping the tag’s original name. No content seems to be lost, it’s just relocated into the folder.
This has been happening at least as far back as 8.0.2.
As a workaround, you can use the secret function system.tag.rename() to rename the tag, or you can use the preferred system.tag.configure() function to rename them as well.