diff --git a/sleepyhead/Graphs/gSessionTimesChart.cpp b/sleepyhead/Graphs/gSessionTimesChart.cpp
index 91da9ab6..4a8e015f 100644
--- a/sleepyhead/Graphs/gSessionTimesChart.cpp
+++ b/sleepyhead/Graphs/gSessionTimesChart.cpp
@@ -63,9 +63,9 @@ void gSummaryChart::SetDay(Day *unused_day)
     firstday = p_profile->FirstDay(m_machtype);
     lastday = p_profile->LastDay(m_machtype);
 
-
     dayindex.clear();
     daylist.clear();
+
     if (!firstday.isValid() || !lastday.isValid()) return;
    // daylist.reserve(firstday.daysTo(lastday)+1);
     QDate date = firstday;
@@ -75,7 +75,6 @@ void gSummaryChart::SetDay(Day *unused_day)
         Day * day = nullptr;
         if (di != p_profile->daylist.end()) {
             day = di.value();
-            if (!day->hasMachine(m_machtype)) day = nullptr;
         }
         daylist.append(day);
         dayindex[date] = idx;
@@ -92,6 +91,11 @@ void gSummaryChart::SetDay(Day *unused_day)
 
 }
 
+
+//QMap<QDate, int> gSummaryChart::dayindex;
+//QList<Day *> gSummaryChart::daylist;
+
+
 bool gSummaryChart::keyPressEvent(QKeyEvent *event, gGraph *graph)
 {
     Q_UNUSED(event)
@@ -148,9 +152,6 @@ bool gSummaryChart::mouseReleaseEvent(QMouseEvent *event, gGraph *graph)
     return true;
 }
 
-QMap<QDate, int> gSummaryChart::dayindex;
-QList<Day *> gSummaryChart::daylist;
-
 void gSummaryChart::preCalc()
 {
     midcalc = p_profile->general->prefCalcMiddle();
@@ -307,6 +308,7 @@ QString gSummaryChart::tooltipData(Day *, int idx)
 
 void gSummaryChart::populate(Day * day, int idx)
 {
+
     int size = calcitems.size();
     bool good = false;
     for (int i=0; i < size; ++i) {
@@ -462,7 +464,7 @@ void gSummaryChart::paint(QPainter &painter, gGraph &graph, const QRegion &regio
     for (int i=idx; i <= idx_end; ++i) {
         Day * day = daylist.at(i);
 
-        if (!day)
+        if (!day) // || !day->hasMachine(m_machtype))
             continue;
 
         day->OpenSummary();
@@ -511,7 +513,7 @@ void gSummaryChart::paint(QPainter &painter, gGraph &graph, const QRegion &regio
 
         totaldays++;
 
-        if (!day) {
+        if (!day) {//  || !day->hasMachine(m_machtype)) {
             lasty1 = rect.bottom();
             lastx1 += barw;
             it++;
@@ -848,7 +850,8 @@ void gSessionTimesChart::paint(QPainter &painter, gGraph &graph, const QRegion &
     for (int i=idx; (i <= idx_end) && (it2 != it_end); ++i, ++it2) {
         Day * day = daylist.at(i);
 
-        if (!day)
+
+        if (!day) // || !day->hasMachine(m_machtype))
             continue;
 
         QHash<int, QList<SummaryChartSlice> >::iterator cit = cache.find(i);
@@ -949,7 +952,7 @@ void gSessionTimesChart::paint(QPainter &painter, gGraph &graph, const QRegion &
         totaldays++;
 
 
-        if (!day) {
+        if (!day) { // || !day->hasMachine(m_machtype)) {
             lasty1 = rect.bottom();
             lastx1 += barw;
             nousedays++;
diff --git a/sleepyhead/Graphs/gSessionTimesChart.h b/sleepyhead/Graphs/gSessionTimesChart.h
index 7e714625..5a3142cd 100644
--- a/sleepyhead/Graphs/gSessionTimesChart.h
+++ b/sleepyhead/Graphs/gSessionTimesChart.h
@@ -200,6 +200,8 @@ public:
         layer->idx_start = idx_start;
         layer->idx_end = idx_end;
         layer->cache.clear();
+        layer->dayindex = dayindex;
+        layer->daylist = daylist;
     }
 
 protected:
@@ -224,8 +226,8 @@ protected:
     QDate firstday;
     QDate lastday;
 
-    static QMap<QDate, int> dayindex;
-    static QList<Day *> daylist;
+    QMap<QDate, int> dayindex;
+    QList<Day *> daylist;
 
     QHash<int, QList<SummaryChartSlice> > cache;
     QList<SummaryCalcItem> calcitems;
diff --git a/sleepyhead/SleepLib/day.h b/sleepyhead/SleepLib/day.h
index 974fa503..7ec6530f 100644
--- a/sleepyhead/SleepLib/day.h
+++ b/sleepyhead/SleepLib/day.h
@@ -298,6 +298,9 @@ class Day
     }
 
     void updateCPAPCache();
+
+    inline QDate date() const { return d_date; }
+    void setDate(QDate date) { d_date = date; }
   protected:
 
 
@@ -314,6 +317,7 @@ class Day
     QHash<ChannelID, long> d_count;
     QHash<ChannelID, double> d_sum;
     bool d_invalidate;
+    QDate d_date;
 };
 
 
diff --git a/sleepyhead/SleepLib/machine.cpp b/sleepyhead/SleepLib/machine.cpp
index 72bdfded..e09704a0 100644
--- a/sleepyhead/SleepLib/machine.cpp
+++ b/sleepyhead/SleepLib/machine.cpp
@@ -825,8 +825,6 @@ bool Machine::hasModifiedSessions()
     return false;
 }
 
-BROKEN... DO NOT TRY TO BUILD THIS
-
 const QString summaryFileName = "Summaries.xml";
 
 bool Machine::LoadSummary(bool everything)
@@ -884,7 +882,8 @@ bool Machine::LoadSummary(bool everything)
             sess->really_set_last(last);
             sess->setEnabled(enabled);
             sess->setSummaryOnly(!events);
-            AddSession(sess);
+            if (!AddSession(sess))
+                delete sess;
       //      sess->LoadSummary();
         }
     }
diff --git a/sleepyhead/SleepLib/profiles.cpp b/sleepyhead/SleepLib/profiles.cpp
index 50ccd310..0f431992 100644
--- a/sleepyhead/SleepLib/profiles.cpp
+++ b/sleepyhead/SleepLib/profiles.cpp
@@ -644,6 +644,7 @@ Day *Profile::addDay(QDate date)
         dit = daylist.insert(date, new Day());
     }
     Day * day = dit.value();
+    day->setDate(date);
 
     if (is_first_day) {
         m_first = m_last = date;
diff --git a/sleepyhead/docs/release_notes.html b/sleepyhead/docs/release_notes.html
index bb344ce5..ad4f2786 100644
--- a/sleepyhead/docs/release_notes.html
+++ b/sleepyhead/docs/release_notes.html
@@ -9,6 +9,9 @@
 
 <p>The New Features and Bugfixes list is getting a little scary, and I completely rewrote some important parts.. so let's have a Version Bump!</p>
 
+<p>First up, a warning: Some new stuff is going down that might break on you.. Overview overhead figures aren't completely finished yet. I know about these and am working on them.
+You will likely have to Rebuild CPAP data to get this to behave properly.. If you have to do it more than once, somethings not right, and I need to know.</p>
+
 <p>Right clicky menu has tons of new stuff for you to play with... some of this you're hopefully going to love! :)</p>
 <p>New Graph Clone ability allows you to make a temporary copy of a graph, and operate it completely independently...
 You can even take these graph clones with you to another day! They aren't saved though. they are gone when you close SleepyHead.</li>