Export-ActivityExplorerData with custom columns

Hello Viktor!
Thanks for reaching out. I have reviewed the documentation but it seems the filter options described in the documentation are the ones available. The column customization is available for the UI version though.  Export-ActivityExplorerData (ExchangePowerShell) | Microsoft Learn
For Powershell, you would have to programatically do this on Powershell, albeit a longer way but it can achieve autocreation of a new CSV if you are aware of the columns you want to strip out. Please note that you will first need to export the data using the Export-ActivityExplorerData cmdlet and run something like this:

PowerShell 
# Import the data $data = Import-Csv -Path "C:\path\to\output.csv"
# Select the custom columns $customColumns = $data | Select-Object Column1, Column2, Column3
# Export the customized data $customColumns | Export-Csv -Path "C:\path\to\custom_output.csv" -NoTypeInformation