Reply To: Exclude results of a compare-object if they meet a specific criteria

Here’s an example of one way to achieve the results you want. There might be more efficient ways, but I find this way pretty easy to read too:

$yesterdays = Import-Csv -Path ("05-07-2014.csv")
$todays = Import-Csv -Path ("05-08-2014.csv")
$getquota = "05-08-2014_Add_Quota.csv"

compare-object $yesterdays $todays -Property EMPLID,GROUP_NAME -PassThru | 
    
    #Group by the employee id in order to compare old and new group names
    Group EmplId |

    #To make working with additional clauses (e.g. the where-clause) easier, let's 
    #create an object with the Old and New entries as different properties
    Foreach {
        New-Object PSObject -Property @{
            New = $_.Group | Where { $_.SideIndicator -eq '=>' }
            Old = $_.Group | Where { $_.SideIndicator -eq '<=' }
        }
    } |
    
    #Then just filter the list to get the ones you want
    Where {
        $hasChangedFromFacultyToStudent = $_.Old.Group_Name -eq 'FacStaffStudents14Spring' -and $_.New.Group_Name -eq 'Students14Spring'
        $hasChangedFromStudentToFaculty = $_.Old.Group_Name -eq 'Students14Spring' -and $_.New.Group_Name -eq 'FacStaffStudents14Spring'
        #In this case we only want those that did _not_ change according to either of the two above conditions
        return -Not($hasChangedFromFacultyToStudent -or $hasChangedFromStudentToFaculty)
    } |
    
    #You seem to only care for the new data, so lets throw away the old data
    Select -ExpandProperty New |
    
    #And then select the properties you want
    Select * -ExcludeProperty MIDDLE_INITIAL,SideIndicator | 
    
    #And finally export the CSV
    Export-Csv $getquota -NoTypeInformation