diff --git a/src/libs/antares/study/study.cpp b/src/libs/antares/study/study.cpp
index 64b954f172..1be10d54d6 100644
--- a/src/libs/antares/study/study.cpp
+++ b/src/libs/antares/study/study.cpp
@@ -1541,21 +1541,5 @@ void Study::computePThetaInfForThermalClusters() const
         }
     }
 }
-
-void Study::deleteDeprecatedFiles(uint previousVersion)
-{
-    if (previousVersion < 870)
-    {
-        const std::string filePath(folderInput + "/hydro/common/capacity/");
-        areas.each(
-          [&filePath](const Area& area)
-          {
-              const std::string fileName(filePath + "maxpower_" + area.id + ".txt");
-              if (bool exist = IO::File::Exists(fileName); exist)
-                  IO::File::Delete(fileName);
-          });
-    }
-}
-
 } // namespace Antares::Data
 
diff --git a/src/libs/antares/study/study.h b/src/libs/antares/study/study.h
index 8d949d9bd3..d52b587604 100644
--- a/src/libs/antares/study/study.h
+++ b/src/libs/antares/study/study.h
@@ -449,12 +449,6 @@ class Study: public Yuni::NonCopyable<Study>, public IObject, public LayerData
     void removeTimeseriesIfTSGeneratorEnabled();
     //@}
 
-    /*!
-    ** \brief Delete deprecated files when upgrading a study
-    */
-    void deleteDeprecatedFiles(uint previousVersion);
-    //@}
-
     //! \name
     //@{
     /*!
diff --git a/src/tools/updater/main.cpp b/src/tools/updater/main.cpp
index b190deda8f..4650493f7d 100644
--- a/src/tools/updater/main.cpp
+++ b/src/tools/updater/main.cpp
@@ -93,12 +93,7 @@ class MyStudyFinder final : public Data::StudyFinder
                     study->parameters.readonly = true;
 
                 logs.info() << "Saving...";
-
-                uint tempVersionVar = (uint)study->header.version;
-                bool isSaved = study->saveToFolder(folder);
-
-                if (isSaved && (tempVersionVar != Antares::Data::versionLatest))
-                    study->deleteDeprecatedFiles(tempVersionVar);
+                study->saveToFolder(folder);
             }
             else
             {
diff --git a/src/ui/simulator/application/study.cpp b/src/ui/simulator/application/study.cpp
index af50b9325d..bb51370a2b 100644
--- a/src/ui/simulator/application/study.cpp
+++ b/src/ui/simulator/application/study.cpp
@@ -393,11 +393,7 @@ class JobSaveStudy final : public Toolbox::Jobs::Job
         }     // save as
 
         // Save the study (only changes in the most cases)
-        uint tempVersionVar = study->header.version;
-        bool isSaved = study->saveToFolder(pFolder);
-
-        if (isSaved && (tempVersionVar != Antares::Data::versionLatest))
-            study->deleteDeprecatedFiles(tempVersionVar);
+        study->saveToFolder(pFolder);
 
         // Scenario Builder
         if (pCanReleaseScenarioBuilder && study->scenarioRules)