Hi,
Regarding the duplicate email, I see I have no choice but to give an invalid email address to one of the parent hoping the parent will be able to supply another one when he logs in.
Regarding the special character ', my csv is already saved as utf-8. My problem is that my import includes lastname and firstname but no username. So on ADDmode, CBJuice takes beginning of lastname to create a username but as the first characters of lastname sometimes includes a ' like in M'Barga, the creation of username fails.
Any other idea ?