A PowerShell module contains commands (such as cmdlets), functions, variables, and so on.
ShareGate provides a module for supported operations with PowerShell.
Using external PowerShell modules alongside the ShareGate Desktop module may cause unforeseen behavior. While we do our best to help with these cases, ShareGate Desktop does not officially support external PowerShell modules.
It is always best to exclusively use ShareGate Desktop's PowerShell module for your operations.