diff --git a/crates/engine/src/cmd/event.rs b/crates/engine/src/cmd/event.rs
index d9271210..8e965a70 100644
--- a/crates/engine/src/cmd/event.rs
+++ b/crates/engine/src/cmd/event.rs
@@ -154,6 +154,7 @@ fn insert_time(e: &mut Engine, p: &Value) -> Result<Value> {
     let s = e.session_mut();
     let ids: Vec<_> = s.tracks.iter().map(|t| t.id).collect();
     for t in ids {
+        crate::edit::separate_all_at(s, t, r.start);
         crate::edit::insert_silence(s, t, r);
         if let Some(tr) = s.track_mut(t) {
             for l in &mut tr.automation {
@@ -185,6 +186,8 @@ fn cut_time(e: &mut Engine, p: &Value) -> Result<Value> {
     let s = e.session_mut();
     let ids: Vec<_> = s.tracks.iter().map(|t| t.id).collect();
     for t in ids {
+        crate::edit::separate_all_at(s, t, r.start);
+        crate::edit::separate_all_at(s, t, r.end);
         crate::edit::clear_range(s, t, r, false);
         crate::edit::shift_from(s, t, r.end, -r.len());
         if let Some(tr) = s.track_mut(t) {
diff --git a/crates/engine/src/edit.rs b/crates/engine/src/edit.rs
index c5edcc6c..636c9c55 100644
--- a/crates/engine/src/edit.rs
+++ b/crates/engine/src/edit.rs
@@ -78,9 +78,9 @@ fn rebase_midi_start(clip: &mut Clip, old_start: Samples, t: TimeCtx<'_>) {
     }
 }
 
-/// Split every clip on a track's active playlist that spans `at`. The piece before `at` keeps the
-/// clip's name. The piece after it is a new clip, and takes the next name of the clip's Auto Rename
-/// scheme when it has one.
+/// Split every clip on a track's active playlist that spans `at`, except time- or edit-locked ones.
+/// The piece before `at` keeps the clip's name. The piece after it is a new clip, and takes the next
+/// name of the clip's Auto Rename scheme when it has one.
 pub fn separate_at(s: &mut Session, track: TrackId, at: Samples) -> usize {
     separate_at_if(s, track, at, |_| true)
 }
@@ -88,11 +88,21 @@ pub fn separate_at(s: &mut Session, track: TrackId, at: Samples) -> usize {
 /// [`separate_at`], giving the piece after `at` the next Auto Rename name only when `auto_name`
 /// returns true for it. Any other piece keeps the clip's name, and its scheme does not count up.
 pub fn separate_at_if(s: &mut Session, track: TrackId, at: Samples, auto_name: impl Fn(&Clip) -> bool) -> usize {
+    split_at(s, track, at, auto_name, true)
+}
+
+/// [`separate_at`], splitting time- and edit-locked clips too. For the Event time operations, which
+/// move the whole timeline, locked clips included.
+pub fn separate_all_at(s: &mut Session, track: TrackId, at: Samples) -> usize {
+    split_at(s, track, at, |_| true, false)
+}
+
+fn split_at(s: &mut Session, track: TrackId, at: Samples, auto_name: impl Fn(&Clip) -> bool, skip_locked: bool) -> usize {
     let tc_tempo = s.tempo.clone();
     let sr = s.sample_rate;
     let t = TimeCtx { tempo: &tc_tempo, sr };
     let mut ids = Vec::new();
-    let n_split = s.track(track).map_or(0, |tr| tr.clips().iter().filter(|c| at > c.start && at < c.end()).count());
+    let n_split = s.track(track).map_or(0, |tr| tr.clips().iter().filter(|c| at > c.start && at < c.end() && !(skip_locked && locked(c))).count());
     for _ in 0..n_split {
         ids.push(s.new_clip_id());
     }
@@ -106,6 +116,7 @@ pub fn separate_at_if(s: &mut Session, track: TrackId, at: Samples, auto_name: i
     for c in pl.clips.drain(..) {
         if at > c.start
             && at < c.end()
+            && !(skip_locked && locked(&c))
             && let Some(id) = ids.pop()
             && let Some((l, mut r)) = split_clip(&c, at, id, t)
         {
diff --git a/crates/engine/tests/it/edit_modes.rs b/crates/engine/tests/it/edit_modes.rs
index 7da8608d..c5d24fe3 100644
--- a/crates/engine/tests/it/edit_modes.rs
+++ b/crates/engine/tests/it/edit_modes.rs
@@ -579,3 +579,48 @@ fn moving_a_group_left_past_zero_keeps_its_spacing() {
     run(&mut e, "edit.move_clips", json!({"clips": [ids[0].0, ids[1].0], "by": -1000}));
     assert_eq!(clips(&e, t), [(0, 100), (1500, 100)]);
 }
+
+#[test]
+fn separate_and_range_edits_leave_locked_clips_whole() {
+    let edits = [
+        ("edit.separate", json!({"at": 24_000})),
+        ("edit.separate", json!({"start": 12_000, "end": 36_000})),
+        ("edit.separate_on_grid", json!({"start": 12_000, "end": 36_000})),
+        ("edit.clear", json!({"start": 12_000, "end": 36_000})),
+        ("edit.insert_silence", json!({"start": 24_000, "end": 25_000})),
+    ];
+    for lock in [None, Some("clip.edit_lock"), Some("clip.time_lock")] {
+        for (cmd, p) in &edits {
+            let (mut e, t, ids) = long("slip", &[(0, 48_000, 0)]);
+            if let Some(lock) = lock {
+                run(&mut e, lock, json!({"clips": [ids[0].0]}));
+            }
+            let mut p = p.clone();
+            p["tracks"] = json!([t.0]);
+            run(&mut e, cmd, p);
+            if lock.is_some() {
+                assert_eq!(clips(&e, t), vec![(0, 48_000)], "{lock:?} {cmd}");
+            } else {
+                assert_ne!(clips(&e, t), vec![(0, 48_000)], "unlocked control {cmd}");
+            }
+        }
+    }
+}
+
+/// Event time edits move the entire timeline, including clips protected from ordinary edits.
+#[test]
+fn event_time_edits_split_and_move_locked_clips() {
+    for lock in ["clip.edit_lock", "clip.time_lock"] {
+        for (command, expected) in [
+            ("event.insert_time", vec![(0, 12_000, 0), (36_000, 36_000, 12_000)]),
+            ("event.cut_time", vec![(0, 12_000, 0), (12_000, 12_000, 36_000)]),
+        ] {
+            let (mut e, t, ids) = long("slip", &[(0, 48_000, 0)]);
+            run(&mut e, lock, json!({"clips": [ids[0].0]}));
+            run(&mut e, command, json!({"start": 12_000, "end": 36_000}));
+            let actual: Vec<_> = e.session().track(t).unwrap().clips().iter().map(|c| (c.start, c.length, c.source_offset())).collect();
+            assert_eq!(actual, expected, "{lock} {command}");
+            assert!(e.session().track(t).unwrap().clips().iter().all(soundcraft_engine::edit::locked));
+        }
+    }
+}