Is there a cmd/certutils to copy a certificate from one store to another?

I think using PowerShell might be the way to go.

$srcStoreScope = "CurrentUser"
$srcStoreName = "CA"

$srcStore = New-Object System.Security.Cryptography.X509Certificates.X509Store $srcStoreName, $srcStoreScope
$srcStore.Open([System.Security.Cryptography.X509Certificates.OpenFlags]::ReadOnly)

$cert = $srcStore.certificates -match "sometext"

$dstStoreScope = "LocalMachine"
$dstStoreName = "root"

$dstStore = New-Object System.Security.Cryptography.X509Certificates.X509Store $dstStoreName, $dstStoreScope
$dstStore.Open([System.Security.Cryptography.X509Certificates.OpenFlags]::ReadWrite)
$dstStore.Add($cert[0])

$srcStore.Close
$dstStore.Close

#Write-Output $cert