Good friends.
After MUCH trying, I decided to quit.
EBox Zentyal of 1.4x to 2.0, there is no possibility of migration to samba / pdc.
The Zentyal complains of several errors, including the group __USERS__
Anyway, the max I got was restuarar folders, users, however, show any change in the ldap server (BD eBox dedicated to the users) it does not replicate.
conclusion, I returned to the eBox 1.4.x restoration was successful con.
To summarize:
If you want to change eBox Zentyal without having headaches with the change, give up, why not going to cut it.
Of the rest, I still love the services we have in eBox / Zentyal
Hugs to all