diff --git a/.github/workflows/__unset-environment.yml b/.github/workflows/__unset-environment.yml
deleted file mode 100644
index 23d6ad255..000000000
--- a/.github/workflows/__unset-environment.yml
+++ /dev/null
@@ -1,97 +0,0 @@
-# Warning: This file is generated automatically, and should not be modified.
-# Instead, please modify the template in the pr-checks directory and run:
-#     pip install ruamel.yaml && python3 sync.py
-# to regenerate this file.
-
-name: PR Check - Test unsetting environment variables
-env:
-  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-  GO111MODULE: auto
-on:
-  push:
-    branches:
-    - main
-    - releases/v1
-    - releases/v2
-  pull_request:
-    types:
-    - opened
-    - synchronize
-    - reopened
-    - ready_for_review
-  workflow_dispatch: {}
-jobs:
-  unset-environment:
-    strategy:
-      matrix:
-        include:
-        - os: ubuntu-latest
-          version: stable-20210308
-        - os: ubuntu-latest
-          version: stable-20210319
-        - os: ubuntu-latest
-          version: stable-20210809
-        - os: ubuntu-latest
-          version: cached
-        - os: ubuntu-latest
-          version: latest
-        - os: ubuntu-latest
-          version: nightly-latest
-    name: Test unsetting environment variables
-    timeout-minutes: 45
-    runs-on: ${{ matrix.os }}
-    steps:
-    - name: Check out repository
-      uses: actions/checkout@v3
-    - name: Prepare test
-      id: prepare-test
-      uses: ./.github/prepare-test
-      with:
-        version: ${{ matrix.version }}
-    - uses: ./../action/init
-      with:
-        db-location: ${{ runner.temp }}/customDbLocation
-        tools: ${{ steps.prepare-test.outputs.tools-url }}
-      env:
-        TEST_MODE: true
-    - name: Build code
-      shell: bash
-      run: env -i PATH="$PATH" HOME="$HOME" ./build.sh
-    - uses: ./../action/analyze
-      id: analysis
-      env:
-        TEST_MODE: true
-    - shell: bash
-      run: |
-        CPP_DB=${{ fromJson(steps.analysis.outputs.db-locations).cpp }}
-        if [[ ! -d $CPP_DB ]] || [[ ! $CPP_DB == ${{ runner.temp }}/customDbLocation/* ]]; then
-          echo "Did not create a database for CPP, or created it in the wrong location."
-          exit 1
-        fi
-        CSHARP_DB=${{ fromJson(steps.analysis.outputs.db-locations).csharp }}
-        if [[ ! -d $CSHARP_DB ]] || [[ ! $CSHARP_DB == ${{ runner.temp }}/customDbLocation/* ]]; then
-          echo "Did not create a database for C Sharp, or created it in the wrong location."
-          exit 1
-        fi
-        GO_DB=${{ fromJson(steps.analysis.outputs.db-locations).go }}
-        if [[ ! -d $GO_DB ]] || [[ ! $GO_DB == ${{ runner.temp }}/customDbLocation/* ]]; then
-          echo "Did not create a database for Go, or created it in the wrong location."
-          exit 1
-        fi
-        JAVA_DB=${{ fromJson(steps.analysis.outputs.db-locations).java }}
-        if [[ ! -d $JAVA_DB ]] || [[ ! $JAVA_DB == ${{ runner.temp }}/customDbLocation/* ]]; then
-          echo "Did not create a database for Java, or created it in the wrong location."
-          exit 1
-        fi
-        JAVASCRIPT_DB=${{ fromJson(steps.analysis.outputs.db-locations).javascript }}
-        if [[ ! -d $JAVASCRIPT_DB ]] || [[ ! $JAVASCRIPT_DB == ${{ runner.temp }}/customDbLocation/* ]]; then
-          echo "Did not create a database for Javascript, or created it in the wrong location."
-          exit 1
-        fi
-        PYTHON_DB=${{ fromJson(steps.analysis.outputs.db-locations).python }}
-        if [[ ! -d $PYTHON_DB ]] || [[ ! $PYTHON_DB == ${{ runner.temp }}/customDbLocation/* ]]; then
-          echo "Did not create a database for Python, or created it in the wrong location."
-          exit 1
-        fi
-    env:
-      INTERNAL_CODEQL_ACTION_DEBUG_LOC: true
diff --git a/.github/workflows/unset-environment-new-cli.yml b/.github/workflows/unset-environment-new-cli.yml
new file mode 100644
index 000000000..39da1b36c
--- /dev/null
+++ b/.github/workflows/unset-environment-new-cli.yml
@@ -0,0 +1,95 @@
+# See `unset-environment-old-cli.yml` for reasoning behind the separate tests.
+name: PR Check - Test unsetting environment variables for CLI version >= 2.5.1
+env:
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  GO111MODULE: auto
+on:
+  push:
+    branches:
+    - main
+    - releases/v1
+    - releases/v2
+  pull_request:
+    types:
+    - opened
+    - synchronize
+    - reopened
+    - ready_for_review
+  workflow_dispatch: {}
+jobs:
+  unset-environment:
+    strategy:
+      matrix:
+        include:
+        - os: ubuntu-latest
+          version: stable-20210809
+        - os: ubuntu-latest
+          version: cached
+        - os: ubuntu-latest
+          version: latest
+        - os: ubuntu-latest
+          version: nightly-latest
+    name: Test unsetting environment variables
+    timeout-minutes: 45
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Check out repository
+      uses: actions/checkout@v3
+    - name: Prepare test
+      id: prepare-test
+      uses: ./.github/prepare-test
+      with:
+        version: ${{ matrix.version }}
+    - uses: ./../action/init
+      with:
+        db-location: ${{ runner.temp }}/customDbLocation
+        tools: ${{ steps.prepare-test.outputs.tools-url }}
+      env:
+        TEST_MODE: true
+    - name: Build code
+      shell: bash
+      run: env -i PATH="$PATH" HOME="$HOME" ./build.sh
+    - uses: ./../action/analyze
+      id: analysis
+      env:
+        TEST_MODE: true
+    - shell: bash
+      run: |
+        CPP_DB="${{ fromJson(steps.analysis.outputs.db-locations).cpp }}"
+        if [[ ! -d "$CPP_DB" ]] || [[ ! "$CPP_DB" == "${RUNNER_TEMP}/customDbLocation/cpp" ]]; then
+          echo "::error::Did not create a database for CPP, or created it in the wrong location." \
+            "Expected location was '${RUNNER_TEMP}/customDbLocation/cpp' but actual was '${CPP_DB}'"
+          exit 1
+        fi
+        CSHARP_DB="${{ fromJson(steps.analysis.outputs.db-locations).csharp }}"
+        if [[ ! -d "$CSHARP_DB" ]] || [[ ! "$CSHARP_DB" == "${RUNNER_TEMP}/customDbLocation/csharp" ]]; then
+          echo "::error::Did not create a database for C Sharp, or created it in the wrong location." \
+            "Expected location was '${RUNNER_TEMP}/customDbLocation/csharp' but actual was '${CSHARP_DB}'"
+          exit 1
+        fi
+        GO_DB="${{ fromJson(steps.analysis.outputs.db-locations).go }}"
+        if [[ ! -d "$GO_DB" ]] || [[ ! "$GO_DB" == "${RUNNER_TEMP}/customDbLocation/go" ]]; then
+          echo "::error::Did not create a database for Go, or created it in the wrong location." \
+            "Expected location was '${RUNNER_TEMP}/customDbLocation/go' but actual was '${GO_DB}'"
+          exit 1
+        fi
+        JAVA_DB="${{ fromJson(steps.analysis.outputs.db-locations).java }}"
+        if [[ ! -d "$JAVA_DB" ]] || [[ ! "$JAVA_DB" == "${RUNNER_TEMP}/customDbLocation/java" ]]; then
+          echo "::error::Did not create a database for Java, or created it in the wrong location." \
+            "Expected location was '${RUNNER_TEMP}/customDbLocation/java' but actual was '${JAVA_DB}'"
+          exit 1
+        fi
+        JAVASCRIPT_DB="${{ fromJson(steps.analysis.outputs.db-locations).javascript }}"
+        if [[ ! -d "$JAVASCRIPT_DB" ]] || [[ ! "$JAVASCRIPT_DB" == "${RUNNER_TEMP}/customDbLocation/javascript" ]]; then
+          echo "::error::Did not create a database for Javascript, or created it in the wrong location." \
+            "Expected location was '${RUNNER_TEMP}/customDbLocation/javascript' but actual was '${JAVASCRIPT_DB}'"
+          exit 1
+        fi
+        PYTHON_DB="${{ fromJson(steps.analysis.outputs.db-locations).python }}"
+        if [[ ! -d "$PYTHON_DB" ]] || [[ ! "$PYTHON_DB" == "${RUNNER_TEMP}/customDbLocation/python" ]]; then
+          echo "::error::Did not create a database for Python, or created it in the wrong location." \
+            "Expected location was '${RUNNER_TEMP}/customDbLocation/python' but actual was '${PYTHON_DB}'"
+          exit 1
+        fi
+    env:
+      INTERNAL_CODEQL_ACTION_DEBUG_LOC: true
diff --git a/.github/workflows/unset-environment-old-cli.yml b/.github/workflows/unset-environment-old-cli.yml
new file mode 100644
index 000000000..281ced054
--- /dev/null
+++ b/.github/workflows/unset-environment-old-cli.yml
@@ -0,0 +1,89 @@
+# There was a bug, fixed in CLI v2.5.1, that didn't propagate environment
+# variables that the Java tracer needed. Here we test all languages
+# except Java for these CLI versions. In `unset-environment-new-cli.yml`
+# we test all languages for recent CLI versions.
+name: PR Check - Test unsetting environment variables for CLI version < 2.5.1
+env:
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  GO111MODULE: auto
+on:
+  push:
+    branches:
+    - main
+    - releases/v1
+    - releases/v2
+  pull_request:
+    types:
+    - opened
+    - synchronize
+    - reopened
+    - ready_for_review
+  workflow_dispatch: {}
+jobs:
+  unset-environment:
+    strategy:
+      matrix:
+        include:
+        - os: ubuntu-latest
+          version: stable-20210308
+        - os: ubuntu-latest
+          version: stable-20210319
+    name: Test unsetting environment variables
+    timeout-minutes: 45
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Check out repository
+      uses: actions/checkout@v3
+    - name: Prepare test
+      id: prepare-test
+      uses: ./.github/prepare-test
+      with:
+        version: ${{ matrix.version }}
+    - uses: ./../action/init
+      with:
+        languages: csharp,cpp,go,javascript,python
+        db-location: ${{ runner.temp }}/customDbLocation
+        tools: ${{ steps.prepare-test.outputs.tools-url }}
+      env:
+        TEST_MODE: true
+    - name: Build code
+      shell: bash
+      run: env -i PATH="$PATH" HOME="$HOME" ./build.sh
+    - uses: ./../action/analyze
+      id: analysis
+      env:
+        TEST_MODE: true
+    - shell: bash
+      run: |
+        CPP_DB="${{ fromJson(steps.analysis.outputs.db-locations).cpp }}"
+        if [[ ! -d "$CPP_DB" ]] || [[ ! "$CPP_DB" == "${RUNNER_TEMP}/customDbLocation/cpp" ]]; then
+          echo "::error::Did not create a database for CPP, or created it in the wrong location." \
+            "Expected location was '${RUNNER_TEMP}/customDbLocation/cpp' but actual was '${CPP_DB}'"
+          exit 1
+        fi
+        CSHARP_DB="${{ fromJson(steps.analysis.outputs.db-locations).csharp }}"
+        if [[ ! -d "$CSHARP_DB" ]] || [[ ! "$CSHARP_DB" == "${RUNNER_TEMP}/customDbLocation/csharp" ]]; then
+          echo "::error::Did not create a database for C Sharp, or created it in the wrong location." \
+            "Expected location was '${RUNNER_TEMP}/customDbLocation/csharp' but actual was '${CSHARP_DB}'"
+          exit 1
+        fi
+        GO_DB="${{ fromJson(steps.analysis.outputs.db-locations).go }}"
+        if [[ ! -d "$GO_DB" ]] || [[ ! "$GO_DB" == "${RUNNER_TEMP}/customDbLocation/go" ]]; then
+          echo "::error::Did not create a database for Go, or created it in the wrong location." \
+            "Expected location was '${RUNNER_TEMP}/customDbLocation/go' but actual was '${GO_DB}'"
+          exit 1
+        fi
+        JAVASCRIPT_DB="${{ fromJson(steps.analysis.outputs.db-locations).javascript }}"
+        if [[ ! -d "$JAVASCRIPT_DB" ]] || [[ ! "$JAVASCRIPT_DB" == "${RUNNER_TEMP}/customDbLocation/javascript" ]]; then
+          echo "::error::Did not create a database for Javascript, or created it in the wrong location." \
+            "Expected location was '${RUNNER_TEMP}/customDbLocation/javascript' but actual was '${JAVASCRIPT_DB}'"
+          exit 1
+        fi
+        PYTHON_DB="${{ fromJson(steps.analysis.outputs.db-locations).python }}"
+        if [[ ! -d "$PYTHON_DB" ]] || [[ ! "$PYTHON_DB" == "${RUNNER_TEMP}/customDbLocation/python" ]]; then
+          echo "::error::Did not create a database for Python, or created it in the wrong location." \
+            "Expected location was '${RUNNER_TEMP}/customDbLocation/python' but actual was '${PYTHON_DB}'"
+          exit 1
+        fi
+    env:
+      INTERNAL_CODEQL_ACTION_DEBUG_LOC: true
diff --git a/pr-checks/checks/unset-environment.yml b/pr-checks/checks/unset-environment.yml
deleted file mode 100644
index f5d03e029..000000000
--- a/pr-checks/checks/unset-environment.yml
+++ /dev/null
@@ -1,49 +0,0 @@
-name: "Test unsetting environment variables"
-description: "An end-to-end integration test that unsets some environment variables"
-os: ["ubuntu-latest"]
-steps:
-  - uses: ./../action/init
-    with:
-      db-location: "${{ runner.temp }}/customDbLocation"
-      tools: ${{ steps.prepare-test.outputs.tools-url }}
-    env:
-      TEST_MODE: true
-  - name: Build code
-    shell: bash
-    run: env -i PATH="$PATH" HOME="$HOME" ./build.sh
-  - uses: ./../action/analyze
-    id: analysis
-    env:
-      TEST_MODE: true
-  - shell: bash
-    run: |
-      CPP_DB=${{ fromJson(steps.analysis.outputs.db-locations).cpp }}
-      if [[ ! -d $CPP_DB ]] || [[ ! $CPP_DB == ${{ runner.temp }}/customDbLocation/* ]]; then
-        echo "Did not create a database for CPP, or created it in the wrong location."
-        exit 1
-      fi
-      CSHARP_DB=${{ fromJson(steps.analysis.outputs.db-locations).csharp }}
-      if [[ ! -d $CSHARP_DB ]] || [[ ! $CSHARP_DB == ${{ runner.temp }}/customDbLocation/* ]]; then
-        echo "Did not create a database for C Sharp, or created it in the wrong location."
-        exit 1
-      fi
-      GO_DB=${{ fromJson(steps.analysis.outputs.db-locations).go }}
-      if [[ ! -d $GO_DB ]] || [[ ! $GO_DB == ${{ runner.temp }}/customDbLocation/* ]]; then
-        echo "Did not create a database for Go, or created it in the wrong location."
-        exit 1
-      fi
-      JAVA_DB=${{ fromJson(steps.analysis.outputs.db-locations).java }}
-      if [[ ! -d $JAVA_DB ]] || [[ ! $JAVA_DB == ${{ runner.temp }}/customDbLocation/* ]]; then
-        echo "Did not create a database for Java, or created it in the wrong location."
-        exit 1
-      fi
-      JAVASCRIPT_DB=${{ fromJson(steps.analysis.outputs.db-locations).javascript }}
-      if [[ ! -d $JAVASCRIPT_DB ]] || [[ ! $JAVASCRIPT_DB == ${{ runner.temp }}/customDbLocation/* ]]; then
-        echo "Did not create a database for Javascript, or created it in the wrong location."
-        exit 1
-      fi
-      PYTHON_DB=${{ fromJson(steps.analysis.outputs.db-locations).python }}
-      if [[ ! -d $PYTHON_DB ]] || [[ ! $PYTHON_DB == ${{ runner.temp }}/customDbLocation/* ]]; then
-        echo "Did not create a database for Python, or created it in the wrong location."
-        exit 1
-      fi