When you move onto PowerShell V2, most of your V1 scripts will hopefully continue to work. There are only few bug fixes that could affect compatibility, including:
- Newly added cmdlets and variables may conflict with variable names (though unlikely)
- The operator -ieq now correctly performs a case-insensitive comparison on characters
- Get-Command now retrieves functions by default whereas in V1, it would only get cmdlets
- When two snapins import cmdlets with the same name, the last one is used
