Complete reinstall. You cannot upgrade directly from 6.0 to 11. The upgrade sequence would be 6.0 → 7 → 8 → 9 → 10 → 11. The time and effort this will require is definitely more than complete reinstall.
And that's not talking about what time all the necessary checks and clean-ups after each upgrade step will take. As well as reading release notes and taking all the necessary precautions before each upgrade step.
Last edited by shruggy; 02-11-2022 at 07:51 AM.
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