CmdID / PowerShell / Cmdlets / Resume
Resume-MailboxImportRequest
Use the Resume-MailboxImportRequest cmdlet to resume an import request that was suspended or failed. Exchange PowerShell reference
From the Exchange PowerShell reference 4 parameters Its page in the reference
Parameters
-IdentityThe Identity parameter specifies the identity of the import request.-Confirm, -cfThe Confirm switch specifies whether to show or hide the confirmation prompt.-DomainControllerThe DomainController parameter specifies the domain controller that's used by this cmdlet to read data from or write data to Active Directory.-WhatIf, -wiThe WhatIf switch shows what the command does without making any changes.