diff --git a/ftl/core/errors.ftl b/ftl/core/errors.ftl
index 8f122dfde..5b74899e4 100644
--- a/ftl/core/errors.ftl
+++ b/ftl/core/errors.ftl
@@ -11,6 +11,7 @@ errors-multiple-notetypes-selected = Please select notes from only one notetype.
 errors-please-check-database = Please use the Check Database action, then try again.
 errors-please-check-media = Please use the Check Media action, then try again.
 errors-collection-too-new = This collection requires a newer version of Anki to open.
+errors-invalid-ids = This deck contains timestamps in the future. Please contact the deck author and ask them to fix the issue.
 
 ## Card Rendering
 
diff --git a/rslib/src/backend/error.rs b/rslib/src/backend/error.rs
index 85ed1ed90..7eba97b34 100644
--- a/rslib/src/backend/error.rs
+++ b/rslib/src/backend/error.rs
@@ -39,6 +39,7 @@ impl AnkiError {
             AnkiError::ImportError(_) => Kind::ImportError,
             AnkiError::FileIoError(_) => Kind::IoError,
             AnkiError::MediaCheckRequired => Kind::InvalidInput,
+            AnkiError::InvalidId => Kind::InvalidInput,
         };
 
         pb::BackendError {
diff --git a/rslib/src/error/mod.rs b/rslib/src/error/mod.rs
index 92a8c9fd4..32c6f9afa 100644
--- a/rslib/src/error/mod.rs
+++ b/rslib/src/error/mod.rs
@@ -49,6 +49,7 @@ pub enum AnkiError {
     MediaCheckRequired,
     CustomStudyError(CustomStudyError),
     ImportError(ImportError),
+    InvalidId,
 }
 
 impl std::error::Error for AnkiError {}
@@ -105,6 +106,7 @@ impl AnkiError {
             AnkiError::CustomStudyError(err) => err.localized_description(tr),
             AnkiError::ImportError(err) => err.localized_description(tr),
             AnkiError::Deleted => tr.browsing_row_deleted().into(),
+            AnkiError::InvalidId => tr.errors_invalid_ids().into(),
             AnkiError::IoError(_)
             | AnkiError::JsonError(_)
             | AnkiError::ProtoError(_)
diff --git a/rslib/src/import_export/gather.rs b/rslib/src/import_export/gather.rs
index e0428b0f3..b73de1bba 100644
--- a/rslib/src/import_export/gather.rs
+++ b/rslib/src/import_export/gather.rs
@@ -41,6 +41,7 @@ impl ExchangeData {
         self.cards = col.gather_cards()?;
         self.decks = col.gather_decks()?;
         self.notetypes = col.gather_notetypes()?;
+        self.check_ids()?;
 
         if with_scheduling {
             self.revlog = col.gather_revlog()?;
@@ -114,6 +115,18 @@ impl ExchangeData {
             card.deck_id = deck_id;
         }
     }
+
+    fn check_ids(&self) -> Result<()> {
+        let now = TimestampMillis::now().0;
+        self.cards
+            .iter()
+            .map(|card| card.id.0)
+            .chain(self.notes.iter().map(|note| note.id.0))
+            .chain(self.revlog.iter().map(|entry| entry.id.0))
+            .any(|timestamp| timestamp > now)
+            .then(|| Err(AnkiError::InvalidId))
+            .unwrap_or(Ok(()))
+    }
 }
 
 fn gather_media_names_from_note(
@@ -225,3 +238,36 @@ impl Collection {
             .collect()
     }
 }
+
+#[cfg(test)]
+mod test {
+    use super::*;
+    use crate::{collection::open_test_collection, search::SearchNode};
+
+    #[test]
+    fn should_gather_valid_notes() {
+        let mut data = ExchangeData::default();
+        let mut col = open_test_collection();
+
+        let note = col.add_new_note("Basic");
+        data.gather_data(&mut col, SearchNode::WholeCollection, true)
+            .unwrap();
+
+        assert_eq!(data.notes, [note]);
+    }
+
+    #[test]
+    fn should_err_if_note_has_invalid_id() {
+        let mut data = ExchangeData::default();
+        let mut col = open_test_collection();
+        let now_micros = TimestampMillis::now().0 * 1000;
+
+        let mut note = col.add_new_note("Basic");
+        note.id = NoteId(now_micros);
+        col.add_note_only_with_id_undoable(&mut note).unwrap();
+
+        assert!(data
+            .gather_data(&mut col, SearchNode::WholeCollection, true)
+            .is_err());
+    }
+}