Hello Nilufar,
as i understand, new contact that you added to kix will not shown in the contact list.
Will the new contacts found by searching for it?
At the moment kix processes just one transaction from the active directory.
In default it is 1000 entrys.
If you have more than 1000 contact you could set the "MaxPageSize" for you Active directory to a higher value.
best regards, Tino Voigt