diff --git a/src/Duration.js b/src/Duration.js
index 7418458..d148cfe 100644
--- a/src/Duration.js
+++ b/src/Duration.js
@@ -4,7 +4,7 @@ import moment from "moment";
 class Duration {
     constructor(durationValue, durationUnit) {
         this._durationValue = durationValue;
-        this.durationUnit = durationUnit;
+        this.durationUnit = durationUnit || Duration.Day;
     }
 
     static inDay(value) {
diff --git a/src/ReportCard.js b/src/ReportCard.js
index 337290e..dee298b 100644
--- a/src/ReportCard.js
+++ b/src/ReportCard.js
@@ -136,6 +136,9 @@ class ReportCard extends BaseEntity {
     }
 
     getStandardReportCardInputRecentDuration() {
+        if (_.isEmpty(this.that.standardReportCardInputRecentDurationJSON)) {
+            return new Duration(1, Duration.Day);
+        }
         const duration = JSON.parse(this.that.standardReportCardInputRecentDurationJSON);
         return new Duration(duration.value, duration.unit);
     }
diff --git a/src/Schema.js b/src/Schema.js
index 4e81bcc..0a67c2e 100644
--- a/src/Schema.js
+++ b/src/Schema.js
@@ -935,6 +935,12 @@ function createRealmConfig() {
                     standardReportCardType.type = _.replace(_.startCase(standardReportCardType.description), new RegExp(' ', 'g'), '');
                 });
 
+                _.forEach(newDB.objects(ReportCard.schema.name), (card) => {
+                    card.standardReportCardInputSubjectTypes = [];
+                    card.standardReportCardInputPrograms = [];
+                    card.standardReportCardInputEncounterTypes = [];
+                });
+
                 //Reset MyDashboard cache because shape of filterJSON in cache has changed
                 const dashboardCache = newDB.objects("DashboardCache");
                 newDB.delete(dashboardCache);