What should be tested?
Ideally the technical pilot consists of purely test data / archives.
How should it be tested?
Workflows for Stage 2 should have been configured, and the mapping, processing, and enablement should be performed like it will be in the live migration.
If auto-enablement of Stage 2 is not enabled, once Stage 1 is completed any error should be reviewed. Stage 2 should be enabled.
When Stage 2 is complete, any issues or problems should be reviewed in the source and target environments.
What happens if these things aren’t working?
If some of the items on this list are not successful/adequate, work to isolate the issue(s) and resolve them.