Using the new Granfeldt FIM/MIM PowerShell Management Features - Import Script. Associated Blogpost https://blog.darrenjrobinson.com/using-the-new-granfeldt-fim-mim-powershell-management-features/

import.ps1

param (
    $Username,
    $Password,
    $Credentials,
    $AuxUsername,
    $AuxPassword,
    $AuxCredentials,
    $ConfigurationParameter,
    $OperationType,
    [bool] $usepagedimport,
    $pagesize,
    $Schema
)

$verbosepreference = "Continue" 
"Username: $($Username) " | out-file "c:\psma\csv\_creds-uname-password.txt" 
"Password: $($Password)" | out-file "c:\psma\csv\_creds-uname-password.txt" -Append

"Username Aux: $($AuxUsername)" | out-file "c:\psma\csv\_creds-uname-password-aux.txt" 
"Password Aux: $($AuxPassword)" | out-file "c:\psma\csv\_creds-uname-password-aux.txt"  -Append

$Schema | convertto-json | out-file "c:\psma\csv\_schema.txt" 
$Credentials | out-file "c:\psma\csv\_creds.txt" 
$AuxCredentials | out-file "c:\psma\csv\_creds-aux.txt" 
$ConfigurationParameter | out-file "c:\psma\csv\_config.txt" 
$ConfigurationParameter["Environment"] | out-file "c:\psma\csv\_config.txt" -append 

$pagesize | out-file "c:\psma\csv\_pagesize.txt" 
$OperationType | out-file "c:\psma\csv\_OperationType.txt" 
$usepagedimport | out-file "c:\psma\csv\_UsePagedImport.txt" 

$obj = new-object -type pscustomobject 
$obj | add-member -type noteproperty -name "Anchor-Employee ID|String" -Value "Employee ID" 
$obj | add-member -type noteproperty -name "objectClass|String" -Value "person" 
$obj | add-member -type noteproperty -name 'Department|String' -value "Department" 
$obj | add-member -type noteproperty -name 'First Name|String' -value "First Name" 
$obj | add-member -type noteproperty -name 'Last Name|String' -value "Last Name" 
$obj