diff --git a/lib/data/dao/group_match_dao.dart b/lib/data/dao/group_match_dao.dart
index 3c16c83..d428fb5 100644
--- a/lib/data/dao/group_match_dao.dart
+++ b/lib/data/dao/group_match_dao.dart
@@ -21,7 +21,7 @@ class GroupMatchDao extends DatabaseAccessor<AppDatabase>
     }
     await into(groupMatchTable).insert(
       GroupMatchTableCompanion.insert(groupId: groupId, matchId: matchId),
-      mode: InsertMode.insertOrReplace,
+      mode: InsertMode.insertOrIgnore,
     );
   }
 
diff --git a/lib/data/dao/match_dao.dart b/lib/data/dao/match_dao.dart
index 32bd323..b56a38b 100644
--- a/lib/data/dao/match_dao.dart
+++ b/lib/data/dao/match_dao.dart
@@ -65,8 +65,9 @@ class MatchDao extends DatabaseAccessor<AppDatabase> with _$MatchDaoMixin {
     );
   }
 
-  /// Adds a new [Match] to the database.
-  /// Also adds associated players and group if they exist.
+  /// Adds a new [Match] to the database. Also adds players and group
+  /// associations. This method assumes that the players and groups added to
+  /// this match are already present in the database.
   Future<void> addMatch({required Match match}) async {
     await db.transaction(() async {
       await into(matchTable).insert(
@@ -80,7 +81,6 @@ class MatchDao extends DatabaseAccessor<AppDatabase> with _$MatchDaoMixin {
       );
 
       if (match.players != null) {
-        await db.playerDao.addPlayersAsList(players: match.players!);
         for (final p in match.players ?? []) {
           await db.playerMatchDao.addPlayerToMatch(
             matchId: match.id,
@@ -90,7 +90,6 @@ class MatchDao extends DatabaseAccessor<AppDatabase> with _$MatchDaoMixin {
       }
 
       if (match.group != null) {
-        await db.groupDao.addGroup(group: match.group!);
         await db.groupMatchDao.addGroupToMatch(
           matchId: match.id,
           groupId: match.group!.id,
@@ -102,6 +101,7 @@ class MatchDao extends DatabaseAccessor<AppDatabase> with _$MatchDaoMixin {
   /// Adds multiple [Match]s to the database in a batch operation.
   /// Also adds associated players and groups if they exist.
   /// If the [matches] list is empty, the method returns immediately.
+  /// This Method should only be used to import matches from a different device.
   Future<void> addMatchAsList({required List<Match> matches}) async {
     if (matches.isEmpty) return;
     await db.transaction(() async {
@@ -186,7 +186,7 @@ class MatchDao extends DatabaseAccessor<AppDatabase> with _$MatchDaoMixin {
                   matchId: match.id,
                   playerId: p.id,
                 ),
-                mode: InsertMode.insertOrReplace,
+                mode: InsertMode.insertOrIgnore,
               );
             }
           }
@@ -204,7 +204,7 @@ class MatchDao extends DatabaseAccessor<AppDatabase> with _$MatchDaoMixin {
                   playerId: m.id,
                   groupId: match.group!.id,
                 ),
-                mode: InsertMode.insertOrReplace,
+                mode: InsertMode.insertOrIgnore,
               );
             }
           }
@@ -221,7 +221,7 @@ class MatchDao extends DatabaseAccessor<AppDatabase> with _$MatchDaoMixin {
                 matchId: match.id,
                 groupId: match.group!.id,
               ),
-              mode: InsertMode.insertOrReplace,
+              mode: InsertMode.insertOrIgnore,
             );
           }
         }
diff --git a/lib/data/dao/player_match_dao.dart b/lib/data/dao/player_match_dao.dart
index 9e242b7..7ebaee6 100644
--- a/lib/data/dao/player_match_dao.dart
+++ b/lib/data/dao/player_match_dao.dart
@@ -18,7 +18,7 @@ class PlayerMatchDao extends DatabaseAccessor<AppDatabase>
   }) async {
     await into(playerMatchTable).insert(
       PlayerMatchTableCompanion.insert(playerId: playerId, matchId: matchId),
-      mode: InsertMode.insertOrReplace,
+      mode: InsertMode.insertOrIgnore,
     );
   }
 
@@ -121,7 +121,7 @@ class PlayerMatchDao extends DatabaseAccessor<AppDatabase>
           inserts.map(
             (c) => into(
               playerMatchTable,
-            ).insert(c, mode: InsertMode.insertOrReplace),
+            ).insert(c, mode: InsertMode.insertOrIgnore),
           ),
         );
       }
diff --git a/test/db_tests/game_test.dart b/test/db_tests/game_test.dart
index ca86a60..0ec2cfc 100644
--- a/test/db_tests/game_test.dart
+++ b/test/db_tests/game_test.dart
@@ -23,7 +23,7 @@ void main() {
   final fixedDate = DateTime(2025, 19, 11, 00, 11, 23);
   final fakeClock = Clock(() => fixedDate);
 
-  setUp(() {
+  setUp(() async {
     database = AppDatabase(
       DatabaseConnection(
         NativeDatabase.memory(),
@@ -68,6 +68,16 @@ void main() {
         group: testGroup2,
       );
     });
+    await database.playerDao.addPlayersAsList(
+      players: [
+        testPlayer1,
+        testPlayer2,
+        testPlayer3,
+        testPlayer4,
+        testPlayer5,
+      ],
+    );
+    await database.groupDao.addGroupsAsList(groups: [testGroup1, testGroup2]);
   });
   tearDown(() async {
     await database.close();
@@ -253,7 +263,7 @@ void main() {
       expect(matchCount, 0);
     });
 
-    test('Checking if match has winner works correclty', () async {
+    test('Checking if match has winner works correctly', () async {
       await database.matchDao.addMatch(match: testMatch1);
       await database.matchDao.addMatch(match: testMatchOnlyGroup);
 
diff --git a/test/db_tests/group_game_test.dart b/test/db_tests/group_game_test.dart
index a4fa146..7d812bd 100644
--- a/test/db_tests/group_game_test.dart
+++ b/test/db_tests/group_game_test.dart
@@ -1,5 +1,5 @@
 import 'package:clock/clock.dart';
-import 'package:drift/drift.dart';
+import 'package:drift/drift.dart' hide isNotNull;
 import 'package:drift/native.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:game_tracker/data/db/database.dart';
@@ -21,7 +21,7 @@ void main() {
   final fixedDate = DateTime(2025, 19, 11, 00, 11, 23);
   final fakeClock = Clock(() => fixedDate);
 
-  setUp(() {
+  setUp(() async {
     database = AppDatabase(
       DatabaseConnection(
         NativeDatabase.memory(),
@@ -53,6 +53,16 @@ void main() {
         group: testGroup1,
       );
     });
+    await database.playerDao.addPlayersAsList(
+      players: [
+        testPlayer1,
+        testPlayer2,
+        testPlayer3,
+        testPlayer4,
+        testPlayer5,
+      ],
+    );
+    await database.groupDao.addGroupsAsList(groups: [testGroup1, testGroup2]);
   });
   tearDown(() async {
     await database.close();
@@ -179,5 +189,33 @@ void main() {
         }
       }
     });
+
+    test('Adding the same group to seperate matches works correctly', () async {
+      final match1 = Match(name: 'Match 1', group: testGroup1);
+      final match2 = Match(name: 'Match 2', group: testGroup1);
+
+      await Future.wait([
+        database.matchDao.addMatch(match: match1),
+        database.matchDao.addMatch(match: match2),
+      ]);
+
+      final group1 = await database.groupMatchDao.getGroupOfMatch(
+        matchId: match1.id,
+      );
+      final group2 = await database.groupMatchDao.getGroupOfMatch(
+        matchId: match2.id,
+      );
+
+      expect(group1, isNotNull);
+      expect(group2, isNotNull);
+
+      final groups = [group1!, group2!];
+      for (final group in groups) {
+        expect(group.members.length, testGroup1.members.length);
+        expect(group.id, testGroup1.id);
+        expect(group.name, testGroup1.name);
+        expect(group.createdAt, testGroup1.createdAt);
+      }
+    });
   });
 }
diff --git a/test/db_tests/player_game_test.dart b/test/db_tests/player_game_test.dart
index e2501eb..8a4f569 100644
--- a/test/db_tests/player_game_test.dart
+++ b/test/db_tests/player_game_test.dart
@@ -1,5 +1,5 @@
 import 'package:clock/clock.dart';
-import 'package:drift/drift.dart';
+import 'package:drift/drift.dart' hide isNotNull;
 import 'package:drift/native.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:game_tracker/data/db/database.dart';
@@ -21,7 +21,7 @@ void main() {
   final fixedDate = DateTime(2025, 19, 11, 00, 11, 23);
   final fakeClock = Clock(() => fixedDate);
 
-  setUp(() {
+  setUp(() async {
     database = AppDatabase(
       DatabaseConnection(
         NativeDatabase.memory(),
@@ -50,6 +50,17 @@ void main() {
         players: [testPlayer4, testPlayer5, testPlayer6],
       );
     });
+    await database.playerDao.addPlayersAsList(
+      players: [
+        testPlayer1,
+        testPlayer2,
+        testPlayer3,
+        testPlayer4,
+        testPlayer5,
+        testPlayer6,
+      ],
+    );
+    await database.groupDao.addGroup(group: testgroup);
   });
   tearDown(() async {
     await database.close();
@@ -185,5 +196,42 @@ void main() {
         expect(player.createdAt, testPlayer.createdAt);
       }
     });
+
+    test(
+      'Adding the same player to seperate matches works correctly',
+      () async {
+        final playersList = [testPlayer1, testPlayer2, testPlayer3];
+        final match1 = Match(name: 'Match 1', players: playersList);
+        final match2 = Match(name: 'Match 2', players: playersList);
+
+        await Future.wait([
+          database.matchDao.addMatch(match: match1),
+          database.matchDao.addMatch(match: match2),
+        ]);
+
+        final players1 = await database.playerMatchDao.getPlayersOfMatch(
+          matchId: match1.id,
+        );
+        final players2 = await database.playerMatchDao.getPlayersOfMatch(
+          matchId: match2.id,
+        );
+
+        expect(players1, isNotNull);
+        expect(players2, isNotNull);
+
+        expect(
+          players1!.map((p) => p.id).toList(),
+          equals(players2!.map((p) => p.id).toList()),
+        );
+        expect(
+          players1.map((p) => p.name).toList(),
+          equals(players2.map((p) => p.name).toList()),
+        );
+        expect(
+          players1.map((p) => p.createdAt).toList(),
+          equals(players2.map((p) => p.createdAt).toList()),
+        );
+      },
+    );
   });
 }