Thank you Jurgen, but i already solved the problem, in the program, for the future entries.
Infact, now all steps are really well.
My question concerned, only the records, i already posted without classification date, so that they had not any date in classification view.
I am watching the notes, but for now i have not found any tool, to change, massively, the value of the characteristic.
The only way is to change manually the value with MSC2N.