Please keep in mind, that this is mainly a user forum, even if Arturia sometimes does answer here.
You can't rename factory presets, if that's what you are trying to do.
If you wan't to rename or relocate a factory preset, then you have to make a copy of each preset and use "Save As".
Please tell, if your issue is'nt about factory presets. Also please tell what name you try to use and where.
You should be able to change Bank names for multiple user presets at a time. It's been quite a while ago i have done that though.