Skip all attributes script from KB 9898 is only intended for the AD to AD migrations. It is not designed for the Exchange scenarios when target objects need to be mailbox enabled. Is there another script?
When running DSA job matching source and target directories for the purpose of further mail migration, skip all attributes (Exchange) version of the script needs to be used. This script is attached to the current KB article with the ReadMe file that contains detailed instructions.
This script does not skip mailnickname because this attribute is handled on another level via MBRedir module.
Note. The readme file states that the script is for version 7 of QMM. This script will also work with version 8.x of QMM.
Important: Script is only for the matching scenarios and like the one from KB 9898 is not going to work for the new objects creation.