Will importing Active Directory users overwrite/delete existing requesters?

Will importing Active Directory users overwrite/delete existing requesters?

We had an issue with a previous version of SDP where the scheduled AD user import task would alter all the requesters in SDP (change their dept, site, etc.). We would like to enable this again, but if we do, will it change any of the requesters already in SDP? I don't want to see users moved to other sites, department changed, etc. We're using SDP 8123. Thanks!

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