Ivo Bellin Salarin yes, that sounds like what I am seeing.
Console log from last build where coverage report was included in build report (MSTest 0.19):
16:44:24 [MSTEST-PLUGIN] Processing test results in file(s) **/*.trx
16:44:24 MSTest: B:\jenkins\workspace\App\Test\Mgmt\Solution\TestResults\2017-09-13 16_44_21.trx
16:44:25 Emma: looking for coverage reports in the entire workspace: B:\jenkins\workspace\App\Test\Mgmt\Solution
16:44:25 Emma: found 1 report files:
16:44:25 Emma: stored 1 report files in the build folder: C:\Program Files (x86)\Jenkins\jobs\App\jobs\Test\jobs\Mgmt\jobs\Solution\builds\54\emma
16:44:25 Emma: Coverage: Classes 181/539 (34%). Methods 549/1076 (51%). Blocks 3805/5997 (63%). Lines 2851/4016 (71%).
Console log from first build where coverage report was not included in build report (MSTest 0.20):
15:47:31 [MSTEST-PLUGIN] INFO processing test results in file(s) **/*.trx
15:47:31 [MSTEST-PLUGIN] INFO processing report file: B:\jenkins\workspace\App\Test\Mgmt\Solution\TestResults\2017-09-14 15_47_29.trx
15:47:31 [MSTEST-PLUGIN] WARNING Unable to delete the file B:\jenkins\workspace\App\Test\Mgmt\Solution\temporary-junit-reports
15:47:31 [MSTEST-PLUGIN] INFO This file is a reserved temporary file. You can delete it safely.
15:47:31 [MSTEST-PLUGIN] INFO XML coverage: transforming 'B:\jenkins\workspace\App\Test\Mgmt\Solution\TestResults\vstest.coveragexml' to 'B:\jenkins\workspace\App\Test\Mgmt\Solution\TestResults\emma\coverage.xml'
After updating the MSTest plugin to 0.20 and adding a the "Record Emma Coverage Report" post-build action, the coverage report is once again being included in the build report.
I really appreciate your assistance with this!