Upgrading from 4.1 to 6

[cal]

Can anyone assure me that an upgrade from V4.1 to V6 will be seamless and a joy to behold?

[David]

There are new features in V6 compared to V4.
So you should check the default setting for the V6 features are what you want when doing the upgrade. There might also be minor style sheet changes required on the result page to get the look you want.

You can run them side by side however. e.g. initially install V6 into a temporary folder on your server for testing.