Quick question. Planning to wipe my harddrives reinstall windows get rid of the gigabytes of stuff i never use or need and have a mass clear out basically.

I remember a dev said the charactor creator for arr will pull the existing data off my computer when i go to create my charactor in arr.

Will it pull my existing charactors data from the server if i delete everything on my hard drives and if not which files do i need to keep?