diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/general/maintenance/MaintenanceFragment.kt b/app/src/main/java/info/nightscout/androidaps/plugins/general/maintenance/MaintenanceFragment.kt
index eea9b5d3c2..a78575151c 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/general/maintenance/MaintenanceFragment.kt
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/general/maintenance/MaintenanceFragment.kt
@@ -16,11 +16,13 @@ import info.nightscout.androidaps.events.EventNewBG
 import info.nightscout.androidaps.insight.database.InsightDatabase
 import info.nightscout.androidaps.interfaces.DataSyncSelector
 import info.nightscout.androidaps.interfaces.ImportExportPrefs
+import info.nightscout.androidaps.interfaces.IobCobCalculator
 import info.nightscout.androidaps.interfaces.PumpSync
 import info.nightscout.androidaps.logging.AAPSLogger
 import info.nightscout.androidaps.logging.UserEntryLogger
 import info.nightscout.androidaps.plugins.bus.RxBusWrapper
 import info.nightscout.androidaps.plugins.general.maintenance.activities.LogSettingActivity
+import info.nightscout.androidaps.plugins.general.overview.OverviewData
 import info.nightscout.androidaps.plugins.iob.iobCobCalculator.events.EventNewHistoryData
 import info.nightscout.androidaps.utils.alertDialogs.OKDialog
 import info.nightscout.androidaps.utils.resources.ResourceHelper
@@ -44,6 +46,8 @@ class MaintenanceFragment : DaggerFragment() {
     @Inject lateinit var uel: UserEntryLogger
     @Inject lateinit var dataSyncSelector: DataSyncSelector
     @Inject lateinit var pumpSync: PumpSync
+    @Inject lateinit var iobCobCalculator: IobCobCalculator
+    @Inject lateinit var overviewData: OverviewData
 
     private val compositeDisposable = CompositeDisposable()
 
@@ -77,6 +81,9 @@ class MaintenanceFragment : DaggerFragment() {
                             insightDatabase.clearAllTables()
                             dataSyncSelector.resetToNextFullSync()
                             pumpSync.connectNewPump()
+                            overviewData.reset()
+                            iobCobCalculator.ads.reset()
+                            iobCobCalculator.clearCache()
                         }
                             .subscribeOn(aapsSchedulers.io)
                             .observeOn(aapsSchedulers.main)
diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/general/overview/OverviewData.kt b/app/src/main/java/info/nightscout/androidaps/plugins/general/overview/OverviewData.kt
index bb4f0917c9..bf9803796d 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/general/overview/OverviewData.kt
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/general/overview/OverviewData.kt
@@ -71,6 +71,44 @@ class OverviewData @Inject constructor(
     var fromTime: Long = 0
     var endTime: Long = 0
 
+    fun reset() {
+        profile = null
+        profileName = null
+        profileNameWithRemainingTime = null
+        calcProgress = ""
+        lastBg = null
+        temporaryBasal = null
+        extendedBolus = null
+        bolusIob = null
+        basalIob = null
+        cobInfo = null
+        lastCarbsTime = 0L
+        temporaryTarget = null
+        lastAutosensData = null
+        bgReadingsArray = ArrayList()
+        bucketedGraphSeries = PointsWithLabelGraphSeries()
+        bgReadingGraphSeries = PointsWithLabelGraphSeries()
+        predictionsGraphSeries = PointsWithLabelGraphSeries()
+        baseBasalGraphSeries = LineGraphSeries()
+        tempBasalGraphSeries = LineGraphSeries()
+        basalLineGraphSeries = LineGraphSeries()
+        absoluteBasalGraphSeries = LineGraphSeries()
+        activitySeries = FixedLineGraphSeries()
+        activityPredictionSeries = FixedLineGraphSeries()
+        iobSeries = FixedLineGraphSeries()
+        absIobSeries = FixedLineGraphSeries()
+        iobPredictions1Series = PointsWithLabelGraphSeries()
+        iobPredictions2Series = PointsWithLabelGraphSeries()
+        minusBgiSeries = FixedLineGraphSeries()
+        minusBgiHistSeries = FixedLineGraphSeries()
+        cobSeries = FixedLineGraphSeries()
+        cobMinFailOverSeries = PointsWithLabelGraphSeries()
+        deviationsSeries = BarGraphSeries()
+        ratioSeries = LineGraphSeries()
+        dsMaxSeries = LineGraphSeries()
+        dsMinSeries = LineGraphSeries()
+    }
+
     fun initRange() {
         rangeToDisplay = sp.getInt(R.string.key_rangetodisplay, 6)
 
diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/iob/iobCobCalculator/IobCobCalculatorPlugin.kt b/app/src/main/java/info/nightscout/androidaps/plugins/iob/iobCobCalculator/IobCobCalculatorPlugin.kt
index 6a0d5bb2de..88ff303484 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/iob/iobCobCalculator/IobCobCalculatorPlugin.kt
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/iob/iobCobCalculator/IobCobCalculatorPlugin.kt
@@ -130,7 +130,7 @@ open class IobCobCalculatorPlugin @Inject constructor(
         runCalculation(reason, System.currentTimeMillis(), bgDataReload = false, limitDataToOldestAvailable = true, cause = event)
     }
 
-    fun clearCache() {
+    override fun clearCache() {
         synchronized(dataLock) {
             aapsLogger.debug(LTag.AUTOSENS, "Clearing cached data.")
             iobTable = LongSparseArray()
diff --git a/core/src/main/java/info/nightscout/androidaps/interfaces/IobCobCalculator.kt b/core/src/main/java/info/nightscout/androidaps/interfaces/IobCobCalculator.kt
index e0e3dfbb0a..9e3a9d428a 100644
--- a/core/src/main/java/info/nightscout/androidaps/interfaces/IobCobCalculator.kt
+++ b/core/src/main/java/info/nightscout/androidaps/interfaces/IobCobCalculator.kt
@@ -27,6 +27,8 @@ interface IobCobCalculator {
     fun iobArrayToString(array: Array<IobTotal>): String
     fun convertToJSONArray(iobArray: Array<IobTotal>): JSONArray
 
+    fun clearCache()
+
     /**
      *  Calculate CobInfo to now()
      *