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.net - Deep copying a PSObject

I have a powershell script in which I do the following

$somePSObjectHashtables = New-Object Hashtable[] $somePSObject.Length;
$somePSObjects = Import-CSV $csvPath
0..($somePSObject.Length - 1) | ForEach-Object {
    $i = $_;
    $somePSObjectHashtables[$i] = @{};
    $somePSObject[$_].PSObject.Properties | ForEach-Object {
        $somePSObjectHashtables[$i][$_.Name] = $_.Value;
    }
}

I need to do this because I want to make several distinct copies of the data in the CSV to perform several distinct manipulations. In a sense I'm performing an "INNER JOIN" on the resulting array of PSObject. I can easily iterate through $somePSObjectHashtables with a ForEach-Object and call Hashtable.Clone() on each member of the array. I can then use New-Object PSObject -Property $someHashTable[$i] to get a deep copy of the PSObject.

My question is, is there some easier way of making the deep copy, without an intermediary Hashtable?

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Note that here is a shorter, maybe a bit cleaner version of this (that I quite enjoy):

$data = Import-Csv .est.csv

$serialData = [System.Management.Automation.PSSerializer]::Serialize($data)

$data2 = [System.Management.Automation.PSSerializer]::Deserialize($serialData)

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