diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
index cf934646d5..9354eb8dbb 100644
--- a/.github/workflows/codecov.yml
+++ b/.github/workflows/codecov.yml
@@ -9,15 +9,18 @@ jobs:
   build:
     runs-on: self-hosted
     steps:
-
       - name: Checkout PR Code
         uses: actions/checkout@v4
 
+      - name: Initialize and Update Submodules
+        run: |
+          git submodule update --init --recursive
+
       - name: Merge PR with Develop
         run: |
           git fetch origin develop
           git checkout -b test-branch
-          git merge origin/develop --no-edit
+          git merge origin/develop --allow-unrelated-histories --no-edit
 
       - name: Clone COBRA Toolbox
         run: |
diff --git a/.github/workflows/testall.yml b/.github/workflows/testall.yml
deleted file mode 100644
index 703b7d9c87..0000000000
--- a/.github/workflows/testall.yml
+++ /dev/null
@@ -1,34 +0,0 @@
-name: MATLAB Tests
-
-on:
-  pull_request:
-    branches:
-      - '**'
-
-jobs:
-  build:
-    runs-on: self-hosted
-    steps:
-    
-    - name: Checkout PR Code
-      uses: actions/checkout@v4
-
-    - name: Merge PR with Develop
-      run: |
-        git fetch origin develop
-        git checkout -b test-branch
-        git merge origin/develop --no-edit
-
-    - name: Clone COBRA Toolbox
-      run: |
-        git clone https://github.com/opencobra/cobratoolbox.git cobratoolbox
-
-    - name: Run MATLAB Tests
-      run: |
-        matlab -batch "run('cobratoolbox/initCobraToolbox.m'); diary('test_results.txt'); run('cobratoolbox/runTestsAndGenerateReport.m'); diary off;"
-
-    - name: Upload Test Report
-      uses: actions/upload-artifact@v4
-      with:
-        name: test-report
-        path: test_results.txt