Have you tried to throw away cached results and then re-query once more?

QueryHandler.Instance.RemoveQueryResultCache(membersQuery);

I can't think that the roles synch will be involved when removing the cached result for any query? When I'm back working in that project I will give it a quick test run though... Thanks!

Hi Johan,
I had a similar problem once where I needed to update forum rights for a user, when the roles had changed inside the "real provider". I fixed it with the following code :

        /// <summary>
        /// Synchronize user roles/groups and invalidate cached entityitems for the user
        /// </summary>
        /// <param name="user">Cloned user object</param>
        /// <returns></returns>
        public static IUser SynchronizeUser(IUser user)
        {
           string[] rolesForUser = Roles.GetRolesForUser(user.UserName);
            List<string> list1 = new List<string>(Enumerable.Where<string>((IEnumerable<string>)rolesForUser, (Func<string, bool>)(roleName => Integrator.ShouldTransferRole(roleName))));
            List<IGroup> list2 = new List<IGroup>();
            foreach (IGroup group in (CacheableCollectionBase<IGroup, GroupCollection>)user.Groups)
            {
                if (!list1.Contains(group.Name) && Integrator.ShouldTransferRole(group.Name))
                    list2.Add(group);
                else
                    list1.Remove(group.Name);
            }
            foreach (IGroup group in list2)
                user.Groups.Remove(group);
            foreach (string roleName in list1)
                user.Groups.Add(Integrator.SynchronizeRole(roleName));
            CommunitySystem.CurrentContext.DefaultSecurity.UpdateUser(user);
            return user;
        }

    
 I hope this helps 

I'd hoped something was built in but I can work with something like that! Thanks!