diff --git a/src/blackmisc/simulation/aircraftmodelloader.cpp b/src/blackmisc/simulation/aircraftmodelloader.cpp
index b8ba7c0c0..1b0250a02 100644
--- a/src/blackmisc/simulation/aircraftmodelloader.cpp
+++ b/src/blackmisc/simulation/aircraftmodelloader.cpp
@@ -39,12 +39,12 @@ namespace BlackMisc
             return dir.exists();
         }
 
-        bool IAircraftModelLoader::mergeWithDbData(CAircraftModelList &modelsFromSimulator, const CAircraftModelList &dbModels)
+        bool IAircraftModelLoader::mergeWithDbData(CAircraftModelList &modelsFromSimulator, const CAircraftModelList &dbModels, bool force)
         {
             if (dbModels.isEmpty() || modelsFromSimulator.isEmpty()) { return false; }
             for (CAircraftModel &simModel : modelsFromSimulator)
             {
-                if (simModel.hasValidDbKey()) { continue; } // already done
+                if (!force && simModel.hasValidDbKey()) { continue; } // already done
                 CAircraftModel dbModel(dbModels.findFirstByModelStringOrDefault(simModel.getModelString()));
                 if (!dbModel.hasValidDbKey())
                 {
@@ -56,6 +56,36 @@ namespace BlackMisc
             return true;
         }
 
+        CStatusMessage IAircraftModelLoader::replaceCacheWithModelData(const CAircraftModelList &models, const CSimulatorInfo &simulator)
+        {
+            const CSimulatorInfo sim = simulator.isSingleSimulator() ? simulator : this->m_simulatorInfo;
+            if (!sim.isSingleSimulator()) { return CStatusMessage(this, CStatusMessage::SeverityError, "Invalid simuataor"); }
+            const CStatusMessage m(this->m_caches.setModels(models, sim));
+            if (m.isSeverityInfoOrLess())
+            {
+                // set is asny
+                // emit loadingFinished(true, sim);
+            }
+            return m;
+        }
+
+        CStatusMessage IAircraftModelLoader::replaceOrAddModelsInCache(const CAircraftModelList &models, const CSimulatorInfo &simulator)
+        {
+            if (models.isEmpty()) { return CStatusMessage(this, CStatusMessage::SeverityInfo, "No data"); }
+            const CSimulatorInfo sim = simulator.isSingleSimulator() ? simulator : this->m_simulatorInfo;
+            if (!sim.isSingleSimulator()) { return CStatusMessage(this, CStatusMessage::SeverityError, "Invalid simuataor"); }
+            CAircraftModelList allModels(this->m_caches.getModels(sim));
+            int c = allModels.replaceOrAddModelsWithString(models, Qt::CaseInsensitive);
+            if (c > 0)
+            {
+                return this->replaceCacheWithModelData(models, sim);
+            }
+            else
+            {
+                return CStatusMessage(this, CStatusMessage::SeverityInfo, "No data changed");
+            }
+        }
+
         void IAircraftModelLoader::ps_loadFinished(bool success)
         {
             Q_UNUSED(success);
diff --git a/src/blackmisc/simulation/aircraftmodelloader.h b/src/blackmisc/simulation/aircraftmodelloader.h
index 75b2bfa76..c5be3dec6 100644
--- a/src/blackmisc/simulation/aircraftmodelloader.h
+++ b/src/blackmisc/simulation/aircraftmodelloader.h
@@ -91,11 +91,20 @@ namespace BlackMisc
             //! Shutdown
             void gracefulShutdown();
 
-            //! Create a loader
+            //! Create a loader and syncronize caches
             static std::unique_ptr<IAircraftModelLoader> createModelLoader(const BlackMisc::Simulation::CSimulatorInfo &simInfo);
 
             //! Merge with DB data if possible
-            static bool mergeWithDbData(BlackMisc::Simulation::CAircraftModelList &modelsFromSimulator, const BlackMisc::Simulation::CAircraftModelList &dbModels);
+            static bool mergeWithDbData(BlackMisc::Simulation::CAircraftModelList &modelsFromSimulator, const BlackMisc::Simulation::CAircraftModelList &dbModels, bool force = false);
+
+        public slots:
+            //! Set cache from outside, this should only be used in special cases.
+            //! But it allows to modify data elsewhere nd update the cache with manipulated data.
+            BlackMisc::CStatusMessage replaceCacheWithModelData(const CAircraftModelList &models, const CSimulatorInfo &simulator = CSimulatorInfo());
+
+            //! Set cache from outside, this should only be used in special cases.
+            //! But it allows to modify data elsewhere nd update the cache with manipulated data.
+            BlackMisc::CStatusMessage replaceOrAddModelsInCache(const CAircraftModelList &models, const CSimulatorInfo &simulator = CSimulatorInfo());
 
         signals:
             //! Parsing is finished