Home Folder Path, falls back to default

the imported of the users via ldap works very well. the only thing is, our homefolder had two folders, data (user data) and system (system settings). the data comes with th login script like map h:=%home_directory\data to the workstations. now i can change that path for the (every single) user in the user settings in filer to USERS\Username\data. this works for the moment, but on the next day it changes to default USERS\Username\.???? Any idear?? is it a bug or is it possible to change that path on import to the right folder?
one of the folders in the System folder is the groupwise archive, so there is no need to get them mobile (-:

thanks for your answers