Default Does flashing a new CSC wipe my phone?

Hey all, simple question here.. I want to apply the XSA CSC found in this thread

to my i9305T. I flashed The Galaxy Experience 16.01 last week and have my phone set up the phone the way I like it but the CSC is not what I want it to be.. is it safe to just flash one without flashing a new rom or getting my phone reset back to new settings/having to redownload all my apps again