In 11.2-U8 there was a GUI option for file mask and directory mask for the SMB service. After upgrade this field is no longer available.
The catch is if you have a value set in 11.2 and then upgraded that value persists in the smb.conf file under [global] section. Without looking at testparam -e there is no way to know you have something other than the default configured.
If you use the aux param's in the smb service gui to set a create mask or directory mask you can override the value that was set in 11.2 but you have no way of removing the old 11.2 values(going back to default). If you set the aux param as the default for samba the entry actually doesn't even show up in the [global] section, but the second you remove the aux param the old 11.2 value appears again.
I would like to be able to set nothing in the aux param field and get the default samba config not the config that I had set in 11.2.