Moving a SharePoint site Collection to another managed Path using PowerShell

I recently needed to move a Site Collection from one managed path to another. I found this blog using stsadm commands. I translated this to a PowerShell script: 

$fromUrl = "http://portal.dev/sites/TestSiteCollection"

$toUrl = "http:// portal.dev"

$backupPath = "c:\siteBackup"

Backup-SPSite $fromUrl -Path $backupPath -force

Remove-SPSite -Identity $fromUrl -Confirm:$false

Restore-SPSite -Identity $toUrl -Path $backupPath -Confirm:$false