It's for a site redesign that is in development now.
To clarify the problem, it appears that any file with "wagm" as part of its name is being deleted, but files without that as part of the name are not.
I also had a problem with a directory located at web root that I named "admin". Any files in the "admin" directory were being deleted, but the directory was fine.
When I renamed the directory to something else, no files were deleted.