diff --git a/LeStorage/Services.swift b/LeStorage/Services.swift
index 8066d67..107d520 100644
--- a/LeStorage/Services.swift
+++ b/LeStorage/Services.swift
@@ -35,8 +35,8 @@ let postDeviceTokenCall: ServiceCall = ServiceCall(
     path: "device-token/", method: .post, requiresToken: true)
 let getUserDataAccessCallContent: ServiceCall = ServiceCall(
     path: "data-access-content/", method: .get, requiresToken: true)
-let userNamesCall: ServiceCall = ServiceCall(
-    path: "user-names/", method: .get, requiresToken: true)
+let userAgentsCall: ServiceCall = ServiceCall(
+    path: "user-agents/", method: .get, requiresToken: true)
 
 /// A class used to send HTTP request to the django server
 public class Services {
@@ -564,8 +564,8 @@ public class Services {
     
     // MARK: - Others
     
-    public func getUserNames() async throws -> [ShortUser] {
-        return try await self._runRequest(serviceCall: userNamesCall)
+    public func getUserAgents() async throws -> [ShortUser] {
+        return try await self._runRequest(serviceCall: userAgentsCall)
     }
 
     // MARK: - Authentication
diff --git a/LeStorage/Store.swift b/LeStorage/Store.swift
index 52d55bb..31f902b 100644
--- a/LeStorage/Store.swift
+++ b/LeStorage/Store.swift
@@ -252,6 +252,7 @@ final public class Store {
     // MARK: - Synchronization
     
     /// Calls addOrUpdateIfNewer from the collection corresponding to the instance
+    @MainActor
     func addOrUpdateIfNewer<T: SyncedStorable>(_ instance: T, shared: Bool) {
         let collection: SyncedCollection<T> = self.registerOrGetSyncedCollection(T.self)
         collection.addOrUpdateIfNewer(instance, shared: shared)
diff --git a/LeStorage/StoreCenter.swift b/LeStorage/StoreCenter.swift
index 659319a..3f6aa83 100644
--- a/LeStorage/StoreCenter.swift
+++ b/LeStorage/StoreCenter.swift
@@ -62,8 +62,8 @@ public class StoreCenter {
     /// The URL manager
     fileprivate var _urlManager: URLManager? = nil
     
-    /// Used for testing, gives the project name to retrieve classes from names
-    var classProject: String? = nil
+    /// Gives the project name to retrieve classes from names
+    public var classProject: String? = nil
 
     var useWebsockets: Bool = false
     var useSynchronization: Bool = false
@@ -640,14 +640,14 @@ public class StoreCenter {
     /// Processes the data coming from a sync request
     @MainActor func synchronizeContent(_ syncData: SyncData) async {
 
-        self._syncAddOrUpdate(syncData.updates)
+        await self._syncAddOrUpdate(syncData.updates)
         await self._syncDelete(syncData.deletions)
-        self._syncAddOrUpdate(syncData.grants, shared: true)
+        await self._syncAddOrUpdate(syncData.grants, shared: true)
         await self.syncRevoke(syncData.revocations, parents: syncData.revocationParents)
 //        self._syncAddOrUpdate(syncData.relationshipSets)
 //        await self._syncDelete(syncData.relationshipRemovals)
-        self._syncAddOrUpdate(syncData.sharedRelationshipSets, shared: true)
-        self._syncRevoke(syncData.sharedRelationshipRemovals)
+        await self._syncAddOrUpdate(syncData.sharedRelationshipSets, shared: true)
+        await self._syncRevoke(syncData.sharedRelationshipRemovals)
 
         Logger.log("sync content: updates = \(syncData.updates.count) / deletions = \(syncData.deletions.count), grants = \(syncData.grants.count)")
         
@@ -667,12 +667,13 @@ public class StoreCenter {
     /// - Parameters:
     ///   - updateArrays: the server updates
     ///   - shared: indicates if the content should be flagged as shared
-    @MainActor func _syncAddOrUpdate(_ updateArrays: [SyncedStorableArray], shared: Bool = false) {
+    @MainActor
+    func _syncAddOrUpdate(_ updateArrays: [SyncedStorableArray], shared: Bool = false) async {
         
         for updateArray in updateArrays {
             for item in updateArray.items {
                 let storeId: String? = item.getStoreId()
-                self.synchronizationAddOrUpdate(item, storeId: storeId, shared: shared)
+                await self.synchronizationAddOrUpdate(item, storeId: storeId, shared: shared)
             }
         }
         
@@ -692,7 +693,7 @@ public class StoreCenter {
     /// Processes data that has been revoked
     fileprivate func syncRevoke(_ revokedArrays: [ObjectIdentifierArray], parents: [[ObjectIdentifierArray]]) async {
         
-        self._syncRevoke(revokedArrays)
+        await self._syncRevoke(revokedArrays)
         for revokedArray in revokedArrays {
             for revoked in revokedArray.items {
                 await self.synchronizationDelete(id: revoked.modelId, type: revokedArray.type, storeId: revoked.storeId) // or synchronizationRevoke ?
@@ -700,17 +701,14 @@ public class StoreCenter {
         }
         
         for level in parents {
-            self._syncRevoke(level)
+            await self._syncRevoke(level)
         }
     }
     
-    fileprivate func _syncRevoke(_ revokeArrays: [ObjectIdentifierArray]) {
-        
-        Task {
-            for revokeArray in revokeArrays {
-                for revoked in revokeArray.items {
-                    await self.synchronizationRevoke(id: revoked.modelId, type: revokeArray.type, storeId: revoked.storeId)
-                }
+    fileprivate func _syncRevoke(_ revokeArrays: [ObjectIdentifierArray]) async {
+        for revokeArray in revokeArrays {
+            for revoked in revokeArray.items {
+                await self.synchronizationRevoke(id: revoked.modelId, type: revokeArray.type, storeId: revoked.storeId)
             }
         }
     }
@@ -752,12 +750,10 @@ public class StoreCenter {
     }
 
     /// Adds or updates an instance into the store
-    func synchronizationAddOrUpdate<T: SyncedStorable>(_ instance: T, storeId: String?, shared: Bool) {
+    func synchronizationAddOrUpdate<T: SyncedStorable>(_ instance: T, storeId: String?, shared: Bool) async {
         let hasAlreadyBeenDeleted: Bool = self._hasAlreadyBeenDeleted(instance)
         if !hasAlreadyBeenDeleted {
-            DispatchQueue.main.async {
-                self._store(id: storeId).addOrUpdateIfNewer(instance, shared: shared)
-            }
+            await self._store(id: storeId).addOrUpdateIfNewer(instance, shared: shared)
         }
     }
 
diff --git a/LeStorage/StoredCollection.swift b/LeStorage/StoredCollection.swift
index 553804f..70c694e 100644
--- a/LeStorage/StoredCollection.swift
+++ b/LeStorage/StoredCollection.swift
@@ -356,7 +356,7 @@ public class StoredCollection<T: Storable>: SomeCollection {
             return false
         }
 
-        if actionOption.cascade { // when user initiated, we want to cascade delete, but when synchronized, we want the delete notifications to make the job and be sure everything works
+        if actionOption.cascade {
             instance.deleteDependencies(store: self.store, actionOption: actionOption)
         }
         
@@ -397,6 +397,7 @@ public class StoredCollection<T: Storable>: SomeCollection {
         if let instance = self.findById(realId) {
             self.deleteItem(instance, actionOption: actionOption)
         }
+        self.requestWrite()
     }
     
     /// Returns the instance corresponding to the provided [id]
@@ -411,7 +412,7 @@ public class StoredCollection<T: Storable>: SomeCollection {
     /// Also removes related API calls
     public func deleteDependencies(_ items: any Sequence<T>) {
         defer {
-            self._triggerWrite = true
+            self.requestWrite()
         }
         let itemsArray = Array(items) // fix error if items is self.items
         for item in itemsArray {