It is recommended not to change the Query and Filter parameter values during the editing job. Instead, one should create a new job if any changes are required in the query. This is mostly applicable to the LDAP-based import job. If there are users imported with the original job, those users might get imported again with the new job if the query matches. Because the job is created new, all those users are displayed as New records in the job history for the first run. However, job execution creates or updates the record depending on whether a user exists in Profile Manager or in the PTT Pro system.
If the job import has huge sets of users, then creating a new job takes a lot of time to import the users for the first time. In this case, one can change the query/filter. It adds or deletes the new set of users based on new query/filter criteria.
If the same user is imported with multiple import jobs, irrespective of the job history status for that user (New, Modified, or Deleted), if the user already exists, it updates the user with new details. The user has the details from the job which is executed last.
If you change the name of a job, be sure to edit the job name in any Import Job Notifications associated with the job.