The only logs available in the artifact for test results are:

• TestsResultsAdmin.ExpTest.FeatureOne.xml
• TestsResultsAdmin.xml
• TestsResultsNonAdmin.ExpTest.FeatureOne.xml
• TestsResultsNonAdmin.xml
• xUnitTestResults.xml

When inspecting the test result count, I only see about 3000, which a bunch short.
We should make sure that we don't override any existing test results file when saving the current run.

Inspect https://powershell.visualstudio.com/PowerShell/_build/results?buildId=14074 artifacts which have too few tests. We're not losing the data as it's part of the tests tab, just missing from the artifacts.