diff --git a/src/lode/components/AddProperty.vue b/src/lode/components/AddProperty.vue
index 38f666a66..5d6f7553a 100644
--- a/src/lode/components/AddProperty.vue
+++ b/src/lode/components/AddProperty.vue
@@ -508,6 +508,7 @@ export default {
             this.selectedPropertyToAddIsLangString = false;
             this.limitedTypes = [];
             this.limitedConcepts = [];
+            this.$store.commit('lode/setAddingValues', []);
             if (this.profile && this.profile[this.selectedPropertyToAdd.value]) {
                 var range = [];
                 var ary = this.profile[this.selectedPropertyToAdd.value]["http://schema.org/rangeIncludes"];
diff --git a/src/lode/components/ThingEditing.vue b/src/lode/components/ThingEditing.vue
index f3af5942d..c23772495 100644
--- a/src/lode/components/ThingEditing.vue
+++ b/src/lode/components/ThingEditing.vue
@@ -842,9 +842,8 @@ export default {
         saveNewProperty: async function() {
             // Validate input
             var property = this.addingProperty;
-            // Remove unnecessary slash from end of url. github #827
-            var value = (this.addingValues.length > 0) ? this.addingValues[0] : undefined;
-            value = value.endsWith("/") ? value.slice(0, value.length - 1) : value;
+            // It's possible to accumulate more than one value if user deleted values in textbox. Use the last added value.
+            var value = (this.addingValues.length > 0) ? this.addingValues[this.addingValues.length - 1] : undefined;
             var range = this.addingRange;
             this.errorMessage = [];
             this.errorMessage = [];
diff --git a/src/store/modules/lode.js b/src/store/modules/lode.js
index f1dd3e014..25a116577 100644
--- a/src/store/modules/lode.js
+++ b/src/store/modules/lode.js
@@ -70,15 +70,30 @@ const mutations = {
     setAddingProperty(state, value) {
         state.addingProperty = value;
     },
-    setAddingValues(state, value) {
-        state.addingValues = value;
+    setAddingValues(state, values) {
+        let newValues = [];
+        if (Array.isArray(values)) {
+            values.forEach((value) => {
+                if (value) {
+                    let newValue = trimUrl(value);
+                    if (newValue) newValues.push(newValue);
+                }
+            });
+        } else {
+            if (values) {
+                let newValue = trimUrl(values);
+                if (newValue) newValues.push(newValue);
+            }
+        }
+        state.addingValues = newValues;
     },
     addToAddingValues(state, value) {
+        let newValue = trimUrl(value);
         if (!state.addingValues) {
             state.addingValues = [];
-            state.addingValues.push(value);
-        } else {
-            state.addingValues.push(value);
+        }
+        if (newValue) {
+            state.addingValues.push(newValue);
         }
     },
     setAddingRange(state, value) {
@@ -164,6 +179,29 @@ const getters = {
     }
 };
 
+function trimUrl(url) {
+    if (!url) {
+        return undefined;
+    }
+    if (url === "" || (url["@value"] && url["@value"] === "")) {
+        return undefined;
+    }
+    let trimmed = url;
+    if (trimmed["@value"] && typeof trimmed["@value"] === "string" && trimmed["@value"].endsWith("/")) {
+        trimmed["@value"] = trimmed["@value"].slice(0, trimmed["@value"].length - 2);
+    }
+    if (trimmed["@value"] && typeof trimmed["@value"] === "string" && trimmed["@value"].startsWith("/")) {
+        trimmed["@value"] = trimmed["@value"].slice(1);
+    }
+    if (trimmed && typeof trimmed === "string" && trimmed.endsWith("/")) {
+        trimmed = trimmed.slice(0, trimmed.length - 2);
+    }
+    if (trimmed && typeof trimmed === "string" && trimmed.startsWith("/")) {
+        trimmed = trimmed.slice(1);
+    }
+    return trimmed;
+}
+
 jsonld.documentLoader = async function(url) {
     if (url in state.rawSchemata) {
         return {