diff --git a/frontend/src/Settings/ImportLists/ImportLists/EditImportListModalContent.js b/frontend/src/Settings/ImportLists/ImportLists/EditImportListModalContent.js
index cb2857bdf..916999bda 100644
--- a/frontend/src/Settings/ImportLists/ImportLists/EditImportListModalContent.js
+++ b/frontend/src/Settings/ImportLists/ImportLists/EditImportListModalContent.js
@@ -73,6 +73,7 @@ function EditImportListModalContent(props) {
     name,
     enableAutomaticAdd,
     shouldMonitor,
+    shouldMonitorExisting,
     shouldSearch,
     rootFolderPath,
     qualityProfileId,
@@ -167,6 +168,20 @@ function EditImportListModalContent(props) {
                 />
               </FormGroup>
 
+              <FormGroup>
+                <FormLabel>
+                  {translate('ShouldMonitorExisting')}
+                </FormLabel>
+
+                <FormInputGroup
+                  type={inputTypes.CHECK}
+                  name="shouldMonitorExisting"
+                  helpText={translate('ShouldMonitorExistingHelpText')}
+                  {...shouldMonitorExisting}
+                  onChange={onInputChange}
+                />
+              </FormGroup>
+
               <FormGroup>
                 <FormLabel>
                   {translate('SearchForNewItems')}
diff --git a/src/NzbDrone.Core/Datastore/Migration/017_import_list_monitor_existing.cs b/src/NzbDrone.Core/Datastore/Migration/017_import_list_monitor_existing.cs
new file mode 100644
index 000000000..1fe332d16
--- /dev/null
+++ b/src/NzbDrone.Core/Datastore/Migration/017_import_list_monitor_existing.cs
@@ -0,0 +1,14 @@
+using FluentMigrator;
+using NzbDrone.Core.Datastore.Migration.Framework;
+
+namespace NzbDrone.Core.Datastore.Migration
+{
+    [Migration(17)]
+    public class ImportListMonitorExisting : NzbDroneMigrationBase
+    {
+        protected override void MainDbUpgrade()
+        {
+            Alter.Table("ImportLists").AddColumn("ShouldMonitorExisting").AsInt32().WithDefaultValue(0);
+        }
+    }
+}
diff --git a/src/NzbDrone.Core/ImportLists/ImportListDefinition.cs b/src/NzbDrone.Core/ImportLists/ImportListDefinition.cs
index 506ccdca3..849b5200b 100644
--- a/src/NzbDrone.Core/ImportLists/ImportListDefinition.cs
+++ b/src/NzbDrone.Core/ImportLists/ImportListDefinition.cs
@@ -6,6 +6,7 @@ public class ImportListDefinition : ProviderDefinition
     {
         public bool EnableAutomaticAdd { get; set; }
         public ImportListMonitorType ShouldMonitor { get; set; }
+        public bool ShouldMonitorExisting { get; set; }
         public bool ShouldSearch { get; set; }
         public int ProfileId { get; set; }
         public int MetadataProfileId { get; set; }
diff --git a/src/NzbDrone.Core/ImportLists/ImportListSyncService.cs b/src/NzbDrone.Core/ImportLists/ImportListSyncService.cs
index 81b59a0d6..bd9662e0c 100644
--- a/src/NzbDrone.Core/ImportLists/ImportListSyncService.cs
+++ b/src/NzbDrone.Core/ImportLists/ImportListSyncService.cs
@@ -196,7 +196,7 @@ private void ProcessBookReport(ImportListDefinition importList, ImportListItemIn
             {
                 _logger.Debug("{0} [{1}] Rejected, Book Exists in DB.  Ensuring Book and Author monitored.", report.EditionGoodreadsId, report.Book);
 
-                if (importList.ShouldMonitor != ImportListMonitorType.None)
+                if (importList.ShouldMonitorExisting && importList.ShouldMonitor != ImportListMonitorType.None)
                 {
                     if (!existingBook.Monitored)
                     {
@@ -307,7 +307,7 @@ private Author ProcessAuthorReport(ImportListDefinition importList, ImportListIt
             {
                 _logger.Debug("{0} [{1}] Rejected, Author Exists in DB.  Ensuring Author monitored", report.AuthorGoodreadsId, report.Author);
 
-                if (!existingAuthor.Monitored)
+                if (importList.ShouldMonitorExisting && !existingAuthor.Monitored)
                 {
                     existingAuthor.Monitored = true;
                     _authorService.UpdateAuthor(existingAuthor);
diff --git a/src/NzbDrone.Core/Localization/Core/en.json b/src/NzbDrone.Core/Localization/Core/en.json
index 4d7ec792e..aff7febff 100644
--- a/src/NzbDrone.Core/Localization/Core/en.json
+++ b/src/NzbDrone.Core/Localization/Core/en.json
@@ -569,7 +569,9 @@
   "SetPermissionsLinuxHelpTextWarning": "If you're unsure what these settings do, do not alter them.",
   "Settings": "Settings",
   "ShortDateFormat": "Short Date Format",
-  "ShouldMonitorHelpText": "Monitor authors and books added from this list",
+  "ShouldMonitorHelpText": "Monitor new authors and books added from this list",
+  "ShouldMonitorExisting": "Monitor existing books",
+  "ShouldMonitorExistingHelpText": "Automatically monitor books on this list which are already in Readarr",
   "ShouldSearchHelpText": "Search indexers for newly added items.  Use with caution for large lists.",
   "ShowBanners": "Show Banners",
   "ShowBannersHelpText": "Show banners instead of names",
diff --git a/src/Readarr.Api.V1/ImportLists/ImportListResource.cs b/src/Readarr.Api.V1/ImportLists/ImportListResource.cs
index 65042ca8b..b87a69e52 100644
--- a/src/Readarr.Api.V1/ImportLists/ImportListResource.cs
+++ b/src/Readarr.Api.V1/ImportLists/ImportListResource.cs
@@ -6,6 +6,7 @@ public class ImportListResource : ProviderResource<ImportListResource>
     {
         public bool EnableAutomaticAdd { get; set; }
         public ImportListMonitorType ShouldMonitor { get; set; }
+        public bool ShouldMonitorExisting { get; set; }
         public bool ShouldSearch { get; set; }
         public string RootFolderPath { get; set; }
         public int QualityProfileId { get; set; }
@@ -27,6 +28,7 @@ public override ImportListResource ToResource(ImportListDefinition definition)
 
             resource.EnableAutomaticAdd = definition.EnableAutomaticAdd;
             resource.ShouldMonitor = definition.ShouldMonitor;
+            resource.ShouldMonitorExisting = definition.ShouldMonitorExisting;
             resource.ShouldSearch = definition.ShouldSearch;
             resource.RootFolderPath = definition.RootFolderPath;
             resource.QualityProfileId = definition.ProfileId;
@@ -48,6 +50,7 @@ public override ImportListDefinition ToModel(ImportListResource resource)
 
             definition.EnableAutomaticAdd = resource.EnableAutomaticAdd;
             definition.ShouldMonitor = resource.ShouldMonitor;
+            definition.ShouldMonitorExisting = resource.ShouldMonitorExisting;
             definition.ShouldSearch = resource.ShouldSearch;
             definition.RootFolderPath = resource.RootFolderPath;
             definition.ProfileId = resource.QualityProfileId;