Site in scheduled Requesters import

Site in scheduled Requesters import

I've tried both Site ID and site name for "Site" field in csv for scheduled Requesters import, but no luck.
Users are imported correctly (login, password, domain ans so on), but Site is empty.
How can i configure ServiceDesk Plus for importing Site as well?

Another question:
Is it posible not to overwrite existing Requester during import if the only change in properties is password?





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