diff --git a/src/main/java/fr/titionfire/ffsaf/domain/service/ResultService.java b/src/main/java/fr/titionfire/ffsaf/domain/service/ResultService.java
index 3ed9a78..f1407a6 100644
--- a/src/main/java/fr/titionfire/ffsaf/domain/service/ResultService.java
+++ b/src/main/java/fr/titionfire/ffsaf/domain/service/ResultService.java
@@ -115,13 +115,15 @@ public class ResultService {
     public Uni<ResultCategoryData> getCategory(String uuid, long poule, SecurityCtx securityCtx) {
         return hasAccess(uuid, securityCtx).chain(r ->
                 matchRepository.list("category.compet.uuid = ?1 AND category.id = ?2", uuid, poule)
-                        .call(list -> Mutiny.fetch(list.get(0).getCategory().getTree()))
+                        .call(list -> list.isEmpty() ? Uni.createFrom().voidItem() :
+                                Mutiny.fetch(list.get(0).getCategory().getTree()))
                         .map(list -> getData(list, r.getMembre())));
     }
 
     public Uni<ResultCategoryData> getCategory(String uuid, long poule) {
         return matchRepository.list("category.compet.uuid = ?1 AND category.id = ?2", uuid, poule)
-                .call(list -> Mutiny.fetch(list.get(0).getCategory().getTree()))
+                .call(list -> list.isEmpty() ? Uni.createFrom().voidItem() :
+                        Mutiny.fetch(list.get(0).getCategory().getTree()))
                 .map(list -> getData(list, null));
     }
 
diff --git a/src/main/java/fr/titionfire/ffsaf/ws/recv/RMatch.java b/src/main/java/fr/titionfire/ffsaf/ws/recv/RMatch.java
index abae418..c96b8ba 100644
--- a/src/main/java/fr/titionfire/ffsaf/ws/recv/RMatch.java
+++ b/src/main/java/fr/titionfire/ffsaf/ws/recv/RMatch.java
@@ -292,32 +292,43 @@ public class RMatch {
                     if (!o.getCompet().getUuid().equals(connection.pathParam("uuid")))
                         throw new DForbiddenException("Permission denied");
                 }))
-                .call(cm -> Panache.withTransaction(
-                                () -> matchRepository.delete("id IN ?1 AND category = ?2", data.matchesToRemove, cm))
-                        .call(__ -> SSMatch.sendDeleteMatch(connection, data.matchesToRemove)))
+                .invoke(m -> System.out.println("A00"))
+                .call(cm -> data.matchesToRemove.isEmpty() ? Uni.createFrom().voidItem() :
+                        (Panache.withTransaction(
+                                        () -> matchRepository.delete("id IN ?1 AND category = ?2", data.matchesToRemove, cm))
+                                .call(__ -> SSMatch.sendDeleteMatch(connection, data.matchesToRemove))))
+                .invoke(m -> System.out.println("A0"))
                 .call(cm -> Panache.withSession(() -> matchRepository.list("id IN ?1 AND category = ?2",
                                 Stream.concat(data.matchOrderToUpdate.keySet().stream(),
                                                 data.matchPouleToUpdate.keySet().stream())
                                         .distinct().toList(), cm)
+                        .invoke(m -> System.out.println("A " + m.size()))
                         .invoke(matchModels -> matchModels.forEach(model -> {
                             if (data.matchPouleToUpdate.containsKey(model.getId()))
                                 model.setPoule(data.matchPouleToUpdate.get(model.getId()));
                             if (data.matchOrderToUpdate.containsKey(model.getId()))
                                 model.setCategory_ord(data.matchOrderToUpdate.get(model.getId()));
                         }))
-                        .call(mm -> Panache.withTransaction(() -> matchRepository.persist(mm)))
+                        .invoke(m -> System.out.println("B " + m.size()))
+                        .call(mm -> mm.isEmpty() ? Uni.createFrom().voidItem() :
+                                Panache.withTransaction(() -> matchRepository.persist(mm)))
+                        .invoke(m -> System.out.println("C"))
                         .invoke(mm -> matches.addAll(mm.stream().map(MatchEntity::fromModel).toList())))
                 )
+                .invoke(m -> System.out.println("D"))
                 .chain(categoryModel -> {
                             Uni<List<MatchModel>> uni = Uni.createFrom().item(new ArrayList<>());
                             for (AddMatch match : data.newMatch)
                                 uni = uni.call(l -> creatMatch(categoryModel, match).invoke(l::add));
-                    Uni<List<MatchModel>> finalUni = uni;
-                    return Panache.withSession(() -> finalUni);
+                            Uni<List<MatchModel>> finalUni = uni;
+                            return Panache.withSession(() -> finalUni);
                         }
                 )
-                .chain(mm -> Panache.withTransaction(() -> matchRepository.create(mm))
-                        .invoke(__ -> matches.addAll(mm.stream().map(MatchEntity::fromModel).toList())))
+                .invoke(m -> System.out.println("E"))
+                .chain(mm -> mm.isEmpty() ? Uni.createFrom().voidItem() :
+                        Panache.withTransaction(() -> matchRepository.create(mm))
+                                .invoke(__ -> matches.addAll(mm.stream().map(MatchEntity::fromModel).toList())))
+                .invoke(m -> System.out.println("F"))
                 .call(__ -> SSMatch.sendMatch(connection, matches))
                 .replaceWithVoid();
     }
diff --git a/src/main/webapp/src/pages/competition/editor/CMTMatchPanel.jsx b/src/main/webapp/src/pages/competition/editor/CMTMatchPanel.jsx
index a4522be..93cb135 100644
--- a/src/main/webapp/src/pages/competition/editor/CMTMatchPanel.jsx
+++ b/src/main/webapp/src/pages/competition/editor/CMTMatchPanel.jsx
@@ -87,7 +87,7 @@ function CMTMatchPanel({catId, cat, menuActions}) {
         setLoading(1);
         sendRequest('getFullCategory', catId)
             .then((data) => {
-                setTrees(data.trees.map(d => from_sendTree(d, true)))
+                setTrees(data.trees.sort((a, b) => a.level - b.level).map(d => from_sendTree(d, true)))
 
                 let matches2 = [];
                 let combsToAdd = [];
@@ -101,7 +101,7 @@ function CMTMatchPanel({catId, cat, menuActions}) {
         const treeListener = ({data}) => {
             if (data.length < 1 || data[0].categorie !== catId)
                 return
-            setTrees(data.map(d => from_sendTree(d, true)))
+            setTrees(data.sort((a, b) => a.level - b.level).map(d => from_sendTree(d, true)))
 
             let matches2 = [];
             let combsToAdd = [];