PST file not being imported in mailboxes created in bulk using PowerShell script

Hi everyone,

I followed Video: How to Bulk Create Mailboxes in Exchange 2013 - NetoMeter Blog to create 100 mailboxes. The script that I have used is: 

# Import data from the CSV file and store it in variable "$data"

$data = import-csv $args[0]

# Get the Active Directory FQDN of the current user

# You can specify it explicitly, if needed - ex. $FQDN = "netometer.local"

$FQDN = $env:userdnsdomain

# Cycle through each row from the CSV and feed the column values into variables

# We also encrypt the password, as the "New-Mailbox" command does  not accept plain text value

foreach ($i in $data)

{

$name = $i.Name

$upn = $name + "@" + $FQDN

$encryptedpass = ConvertTo-SecureString -AsPlainText $i.Password -Force

New-Mailbox -Name $name -UserPrincipalName $upn -Password $encryptedpass

}

Mailboxes get created. The mailboxes opens and emails are also being sent and received from those 100 mailboxes. But I can't import pst to them. The status of Get-MailboxImportRequest always shows as Queued. I can export mailbox but the problem is in importing mailbox. It works right when I create mailboxes manually using ecp and import pst. What could be the problem? I am using on-premises Exchange 2013. The csv file have two columns: Name and Password.

Thanks & regards,

Talib Hussain