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Replicate production to the test instance to get a clone of production environment
Capture screenshots on the test instance before the upgrade is made
Perform upgrades on test
Verify screenshots to capture any regressions resulting from upgrades
Perform adjustments until screenshot tests pass
Perform the same set of upgrades on production
It is recommended that the system updates are carried out on a regular basis (weekly or biweekly).
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Setup
The steps below are common to all upgrade tasks and should be done as a pre-requisite before an actual upgrade is attempted.
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