diff --git a/.github/workflows/sims.yml b/.github/workflows/sims.yml
index aa8dd73a..cdbd8b00 100644
--- a/.github/workflows/sims.yml
+++ b/.github/workflows/sims.yml
@@ -63,58 +63,58 @@ jobs:
           make test-sim-nondeterminism
         if: env.GIT_DIFF
 
-  # test-sim-import-export:
-  #   runs-on: ubuntu-latest
-  #   needs: [build, install-runsim]
-  #   steps:
-  #     - uses: actions/checkout@v2
-  #     - uses: actions/setup-go@v2.1.3
-  #       with:
-  #         go-version: 1.16
-  #     - name: Display go version
-  #       run: go version
-  #     - uses: technote-space/get-diff-action@v4
-  #       with:
-  #         SUFFIX_FILTER: |
-  #           **/**.go
-  #           go.mod
-  #           go.sum
-  #         SET_ENV_NAME_INSERTIONS: 1
-  #         SET_ENV_NAME_LINES: 1
-  #     - uses: actions/cache@v2.1.6
-  #       with:
-  #         path: ~/go/bin
-  #         key: ${{ runner.os }}-go-runsim-binary
-  #       if: env.GIT_DIFF
-  #     - name: test-sim-import-export
-  #       run: |
-  #         make test-sim-import-export
-  #       if: env.GIT_DIFF
+  test-sim-import-export:
+    runs-on: ubuntu-latest
+    needs: [build, install-runsim]
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-go@v2.1.3
+        with:
+          go-version: 1.16
+      - name: Display go version
+        run: go version
+      - uses: technote-space/get-diff-action@v4
+        with:
+          SUFFIX_FILTER: |
+            **/**.go
+            go.mod
+            go.sum
+          SET_ENV_NAME_INSERTIONS: 1
+          SET_ENV_NAME_LINES: 1
+      - uses: actions/cache@v2.1.6
+        with:
+          path: ~/go/bin
+          key: ${{ runner.os }}-go-runsim-binary
+        if: env.GIT_DIFF
+      - name: test-sim-import-export
+        run: |
+          make test-sim-import-export
+        if: env.GIT_DIFF
 
-  # test-sim-after-import:
-  #   runs-on: ubuntu-latest
-  #   needs: [build, install-runsim]
-  #   steps:
-  #     - uses: actions/checkout@v2
-  #     - uses: actions/setup-go@v2.1.3
-  #       with:
-  #         go-version: 1.16
-  #     - name: Display go version
-  #       run: go version
-  #     - uses: technote-space/get-diff-action@v4
-  #       with:
-  #         SUFFIX_FILTER: |
-  #           **/**.go
-  #           go.mod
-  #           go.sum
-  #         SET_ENV_NAME_INSERTIONS: 1
-  #         SET_ENV_NAME_LINES: 1
-  #     - uses: actions/cache@v2.1.6
-  #       with:
-  #         path: ~/go/bin
-  #         key: ${{ runner.os }}-go-runsim-binary
-  #       if: env.GIT_DIFF
-  #     - name: test-sim-after-import
-  #       run: |
-  #         make test-sim-after-import
-  #       if: env.GIT_DIFF
+  test-sim-after-import:
+    runs-on: ubuntu-latest
+    needs: [build, install-runsim]
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-go@v2.1.3
+        with:
+          go-version: 1.16
+      - name: Display go version
+        run: go version
+      - uses: technote-space/get-diff-action@v4
+        with:
+          SUFFIX_FILTER: |
+            **/**.go
+            go.mod
+            go.sum
+          SET_ENV_NAME_INSERTIONS: 1
+          SET_ENV_NAME_LINES: 1
+      - uses: actions/cache@v2.1.6
+        with:
+          path: ~/go/bin
+          key: ${{ runner.os }}-go-runsim-binary
+        if: env.GIT_DIFF
+      - name: test-sim-after-import
+        run: |
+          make test-sim-after-import
+        if: env.GIT_DIFF