diff --git a/rslib/backend.proto b/rslib/backend.proto
index 62648e10f..899d74a0b 100644
--- a/rslib/backend.proto
+++ b/rslib/backend.proto
@@ -50,6 +50,10 @@ message NoteID {
   int64 nid = 1;
 }
 
+message NoteIDs {
+  repeated int64 nids = 1;
+}
+
 message CardID {
   int64 cid = 1;
 }
@@ -797,6 +801,7 @@ message FilterToSearchIn {
     uint32 added_in = 8;
     // will be due in the next x days
     int32 due_in = 9;
+    NoteIDs nids = 10;
   }
 }
 
diff --git a/rslib/src/backend/mod.rs b/rslib/src/backend/mod.rs
index 9cf765f8a..6d33d6df0 100644
--- a/rslib/src/backend/mod.rs
+++ b/rslib/src/backend/mod.rs
@@ -262,6 +262,12 @@ impl From<pb::NoteId> for NoteID {
     }
 }
 
+impl pb::NoteIDs {
+    fn into_id_string(self) -> String {
+        self.nids.iter().map(|i| i.to_string()).collect::<Vec<_>>().join(",")
+    }
+}
+
 impl From<pb::NoteTypeId> for NoteTypeID {
     fn from(ntid: pb::NoteTypeId) -> Self {
         NoteTypeID(ntid.ntid)
@@ -340,6 +346,7 @@ impl From<pb::FilterToSearchIn> for Node<'_> {
                 operator: "<=".to_string(),
                 kind: PropertyKind::Due(i),
             }),
+            Filter::Nids(nids) => Node::Search(SearchNode::NoteIDs(nids.into_id_string().into())),
         }
     }
 }
diff --git a/rslib/src/search/parser.rs b/rslib/src/search/parser.rs
index e9b6a377b..399ce177f 100644
--- a/rslib/src/search/parser.rs
+++ b/rslib/src/search/parser.rs
@@ -67,7 +67,7 @@ pub enum SearchNode<'a> {
     },
     State(StateKind),
     Flag(u8),
-    NoteIDs(&'a str),
+    NoteIDs(Cow<'a, str>),
     CardIDs(&'a str),
     Property {
         operator: String,
@@ -318,7 +318,7 @@ fn search_node_for_text_with_argument<'a>(
         "is" => parse_state(val)?,
         "did" => parse_did(val)?,
         "mid" => parse_mid(val)?,
-        "nid" => SearchNode::NoteIDs(check_id_list(val, key)?),
+        "nid" => SearchNode::NoteIDs(check_id_list(val, key)?.into()),
         "cid" => SearchNode::CardIDs(check_id_list(val, key)?),
         "re" => SearchNode::Regex(unescape_quotes(val)),
         "nc" => SearchNode::NoCombining(unescape(val)?),