diff --git a/crates/keymap/src/ui/sets.rs b/crates/keymap/src/ui/sets.rs
index a18343a5..7b4cd479 100644
--- a/crates/keymap/src/ui/sets.rs
+++ b/crates/keymap/src/ui/sets.rs
@@ -43,7 +43,7 @@ impl Draw<'_, '_> {
         let modified = DialogState::is_modified(self.env);
         let items = self.set_items(builtin, modified);
         let mut act = None;
-        ui.add_enabled_ui(self.state.review.is_none(), |ui| {
+        ui.add_enabled_ui(!self.state.modal(), |ui| {
             ui.horizontal(|ui| {
                 let set_label = self.ui("Set:");
                 let l = ui.label(self.vis(&set_label));
diff --git a/crates/keymap/src/ui/state.rs b/crates/keymap/src/ui/state.rs
index d9461647..c53a12d2 100644
--- a/crates/keymap/src/ui/state.rs
+++ b/crates/keymap/src/ui/state.rs
@@ -787,13 +787,26 @@ impl DialogState {
     fn load_set(&mut self, env: &mut Env, name: &str) -> Result<(), ProfileError> {
         let Some((p, b)) = env.sets.as_mut() else { return Err(ProfileError::NotFound) };
         p.select(name, b)?;
-        env.keymap.set_overrides(p.active_overrides(b).clone());
+        self.load_active(env);
+        Ok(())
+    }
+
+    /// Loads the active set (no overrides when none is left), with a fresh undo history.
+    fn load_active(&mut self, env: &mut Env) {
+        if let Some((p, b)) = env.sets.as_ref() {
+            env.keymap.set_overrides(p.active_overrides(b).clone());
+        }
         self.session = Some(EditSession::begin(env.keymap));
         self.recording = None;
         self.conflict = None;
         self.field = None;
+        self.prompt = None;
         self.changed = true;
-        Ok(())
+    }
+
+    /// A prompt or the import review is open: the set row, the table and the edit actions wait.
+    pub(crate) fn modal(&self) -> bool {
+        self.prompt.is_some() || self.review.is_some()
     }
 
     fn report(&mut self, env: &Env, result: Result<(), ProfileError>) {
@@ -805,6 +818,7 @@ impl DialogState {
 
     /// The set picker. With unsaved edits it asks to save them first.
     pub(crate) fn switch_set(&mut self, env: &mut Env, name: &str) {
+        self.prompt = None;
         self.after_save_prompt(env, Then::Switch(name.to_string()));
     }
 
@@ -891,13 +905,22 @@ impl DialogState {
         }
     }
 
+    /// Deletes a user set. Deleting the active set loads the one that becomes active, or no
+    /// overrides when no set is left.
     fn delete_set(&mut self, env: &mut Env, name: &str) {
         let result = match env.sets.as_mut() {
-            Some((p, b)) => p.delete(name, b).map(|()| p.active_name(b).to_string()),
+            Some((p, b)) => {
+                let was_active = p.active_name(b) == name;
+                p.delete(name, b).map(|()| was_active)
+            }
             None => Err(ProfileError::NotFound),
         };
-        let result = result.and_then(|active| self.load_set(env, &active));
-        self.report(env, result);
+        match result {
+            Ok(true) => self.load_active(env),
+            Ok(false) => self.changed = true,
+            Err(_) => {}
+        }
+        self.report(env, result.map(|_| ()));
     }
 
     /// Save: stores the edits; a built-in's become a copy. The undo history stays.
@@ -1348,6 +1371,42 @@ mod tests {
         assert_eq!((fx.km.overrides(), &fx.p), (&km0, &p0));
     }
 
+    #[test]
+    fn a_stale_delete_prompt_neither_reloads_nor_drops_edits() {
+        let mut fx = Fx::new(Options::default());
+        fx.p.save_as("Mine", Overrides::new(), &fx.b).ok();
+        fx.p.save_as("Other", Overrides::new(), &fx.b).ok();
+        let mut st = open(&mut fx);
+        st.ask_delete_set(&fx.env());
+        assert!(st.modal());
+        st.switch_set(&mut fx.env(), "Mine");
+        assert_eq!((st.prompt.clone(), fx.p.active.as_str()), (None, "Mine"), "switching closes the prompt");
+
+        record(&mut st, &mut fx, add("object.front"), &["F2"]);
+        st.prompt = Some(Prompt::DeleteSet("Other".into()));
+        st.answer(&mut fx.env(), Answer::Yes);
+        assert!(!fx.p.sets.contains_key("Other"));
+        assert_eq!((fx.p.active.as_str(), fx.keys("object.front")), ("Mine", vec!["F2".to_string()]), "the active set keeps its edits");
+        assert!(st.can_undo());
+    }
+
+    #[test]
+    fn deleting_the_last_set_without_builtins_loads_no_overrides() {
+        let mut fx = Fx::new(Options::default());
+        fx.b.clear();
+        let mut mine = Overrides::new();
+        mine.insert("object.front", vec!["F2".into()]);
+        fx.p.save_as("Mine", mine.clone(), &fx.b).ok();
+        fx.km.set_overrides(mine);
+        let mut st = open(&mut fx);
+        st.ask_delete_set(&fx.env());
+        st.answer(&mut fx.env(), Answer::Yes);
+        assert!(st.message.is_none(), "{:?}", st.message);
+        assert!(fx.p.sets.is_empty() && fx.km.overrides().is_empty() && !st.can_undo());
+        st.ok(&mut fx.env());
+        assert!(fx.p.sets.is_empty(), "OK stores no copy of the deleted set");
+    }
+
     #[test]
     fn ok_stores_edits_of_a_builtin_as_a_copy() {
         let mut fx = Fx::new(Options::default());
diff --git a/crates/keymap/src/ui/view.rs b/crates/keymap/src/ui/view.rs
index 7bebed9f..373bbb82 100644
--- a/crates/keymap/src/ui/view.rs
+++ b/crates/keymap/src/ui/view.rs
@@ -310,7 +310,7 @@ impl Draw<'_, '_> {
             }
             return;
         }
-        if text_focus || !self.env.options.editable {
+        if text_focus || !self.env.options.editable || self.state.modal() {
             return;
         }
         let mac = self.env.keymap.platform().is_mac();
@@ -351,7 +351,13 @@ impl Draw<'_, '_> {
             let mid_bottom = (rest.max.y - bottom_h - gap).max(rest.min.y);
             let mid = Rect::from_min_max(rest.min, pos2(rest.max.x, mid_bottom));
             if !self.review(ui, mid) {
-                self.middle(ui, mid);
+                let prompt = self.state.prompt.is_some();
+                ui.scope(|ui| {
+                    if prompt {
+                        ui.disable();
+                    }
+                    self.middle(ui, mid);
+                });
             }
             let top = (mid.max.y + gap).min(rest.max.y);
             let bottom = Rect::from_min_max(pos2(rest.min.x, top), rest.max);
@@ -1303,7 +1309,7 @@ impl Draw<'_, '_> {
             if m.goto.is_some() && self.button(ui, true, &self.ui("Go to Conflict"), "shortcuts.message.goto") {
                 act = 1;
             }
-            if m.undo && self.button(ui, self.state.can_undo(), &self.ui("Undo"), "shortcuts.message.undo") {
+            if m.undo && self.button(ui, self.state.can_undo() && !self.state.modal(), &self.ui("Undo"), "shortcuts.message.undo") {
                 act = 2;
             }
         });
@@ -1374,15 +1380,16 @@ impl Draw<'_, '_> {
         } else {
             vec![(self.ui("Close"), "shortcuts.close")]
         };
+        let idle = !self.state.modal();
         ui.horizontal(|ui| {
             if editable {
-                if self.button(ui, self.state.can_undo(), &self.ui("Undo"), "shortcuts.undo") {
+                if self.button(ui, idle && self.state.can_undo(), &self.ui("Undo"), "shortcuts.undo") {
                     self.state.undo(self.env);
                 }
-                if self.button(ui, self.state.can_redo(), &self.ui("Redo"), "shortcuts.redo") {
+                if self.button(ui, idle && self.state.can_redo(), &self.ui("Redo"), "shortcuts.redo") {
                     self.state.redo(self.env);
                 }
-                if self.button(ui, !self.env.keymap.overrides().is_empty(), &self.ui("Reset All…"), "shortcuts.resetAll") {
+                if self.button(ui, idle && !self.env.keymap.overrides().is_empty(), &self.ui("Reset All…"), "shortcuts.resetAll") {
                     self.state.ask_reset_all();
                 }
             }
@@ -1397,7 +1404,8 @@ impl Draw<'_, '_> {
             let width: f32 = right.iter().map(|(t, _)| self.button_width(ui, t) + gap).sum();
             ui.add_space((ui.available_width() - width).max(0.0));
             for (text, id) in &right {
-                if self.button(ui, true, text, id) {
+                // OK waits for the open prompt or review; Cancel and Close never do.
+                if self.button(ui, idle || *id != "shortcuts.ok", text, id) {
                     if editable && *id == "shortcuts.ok" {
                         self.state.ok(self.env);
                     } else {
diff --git a/crates/keymap/tests/ui_dialog.rs b/crates/keymap/tests/ui_dialog.rs
index 38a77e28..aed56d40 100644
--- a/crates/keymap/tests/ui_dialog.rs
+++ b/crates/keymap/tests/ui_dialog.rs
@@ -630,6 +630,24 @@ fn cancel_restores_keymap_and_sets() {
     assert!(h.state().km.overrides().is_empty());
 }
 
+#[test]
+fn an_open_prompt_holds_the_set_row_table_and_edit_actions() {
+    let mut h = with_sets(Profiles::default());
+    click(&mut h, "Save: ⌘S");
+    press(&mut h, Modifiers::NONE, EguiKey::F2);
+    new_set(&mut h, "Other");
+    click(&mut h, "Delete");
+    assert!(has(&h, "Delete the set “Other”?"));
+    for label in ["Set:", "New Set…", "Save: F2", "Undo", "Reset All…", "OK"] {
+        assert!(h.get_by_label(label).accesskit_node().is_disabled(), "{label}");
+    }
+    assert!(h.get_all_by_label("Cancel").all(|n| !n.accesskit_node().is_disabled()), "the prompt's and the dialog's");
+    h.get_all_by_label("Cancel").next().expect("the prompt's Cancel").click();
+    h.run();
+    assert!(h.state().state.is_open());
+    assert!(!h.get_by_label("OK").accesskit_node().is_disabled());
+}
+
 #[test]
 fn ok_stores_edits_of_a_builtin_as_a_copy() {
     let mut h = with_sets(Profiles::default());