Custom person security profile (secured by area of responsibility) unable to search for terminated e

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We have a custom HR specialist data role that secures by area of responsibility. The scope for the area of responsibility is job family. This particular custom data role limits visability to union job families. When a user that is assigned this union HR specialist role attempt to search for some terminated employees (but not all - not sure why some appear and some don't), no results appear although they appear for those assigned the seeded specialist role.

any thoughts on why this would be? appreciate the feedback