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Upgrading a live website is not something to be undertaken lightly so please read the Upgrade Instructions carefully. The instructions may appear complicated because there are many different configurations that need to be considered, but we have tried to write them so that you need only select a single path from the many available depending on your particular circumstances.
The overall procedure is:
Please read the full upgrade instructions, listed below, carefully. If you have any questions before, during, or after the upgrade then please ask them on the [upgrade forum].