private async Task <string> TrasnferAudit()
        {
            StringBuilder content = new StringBuilder();

            await _comparerSource.InitializeConnection(_iWriteToOutput, content, "Connection CRM Source.", "Connection CRM Target.");

            string operation = string.Format(Properties.OperationNames.TransferingAuditFormat2, ConnectionSource.Name, ConnectionTarget.Name);

            content.AppendLine(_iWriteToOutput.WriteToOutputStartOperation(null, operation));

            var repositorySource = new EntityMetadataRepository(_comparerSource.Service1);
            var repositoryTarget = new EntityMetadataRepository(_comparerSource.Service2);

            var taskSource = repositorySource.GetEntitiesWithAttributesForAuditAsync();
            var taskTarget = repositoryTarget.GetEntitiesWithAttributesForAuditAsync();

            var listEntityMetadataSource = await taskSource;

            content.AppendLine(_iWriteToOutput.WriteToOutput(null, "Entities in {0}: {1}", ConnectionSource.Name, listEntityMetadataSource.Count()));

            var listEntityMetadataTarget = await taskTarget;

            content.AppendLine(_iWriteToOutput.WriteToOutput(null, "Entities in {0}: {1}", ConnectionTarget.Name, listEntityMetadataTarget.Count()));

            var commonEntityMetadata = new List <LinkedEntities <EntityMetadata> >();

            foreach (var entityMetadata1 in listEntityMetadataSource.OrderBy(e => e.LogicalName))
            {
                {
                    var entityMetadata2 = listEntityMetadataTarget.FirstOrDefault(e => string.Equals(e.LogicalName, entityMetadata1.LogicalName, StringComparison.InvariantCultureIgnoreCase));

                    if (entityMetadata2 != null)
                    {
                        commonEntityMetadata.Add(new LinkedEntities <EntityMetadata>(entityMetadata1, entityMetadata2));
                        continue;
                    }
                }
            }

            HashSet <string> entitiesToPublish = new HashSet <string>();

            var entitiesToEnableAudit = commonEntityMetadata.Where(
                e =>
                e.Entity1.IsAuditEnabled != null &&
                e.Entity1.IsAuditEnabled.Value &&
                e.Entity2.IsAuditEnabled != null &&
                e.Entity2.IsAuditEnabled.CanBeChanged &&
                e.Entity2.IsAuditEnabled.Value == false
                ).ToList();

            if (entitiesToEnableAudit.Any())
            {
                content
                .AppendLine()
                .AppendFormat("Enabling Audit on Entities: {0}", entitiesToEnableAudit.Count)
                .AppendLine();

                foreach (var entityLink in entitiesToEnableAudit.OrderBy(e => e.Entity1.LogicalName))
                {
                    content.AppendLine(_tabSpacer + entityLink.Entity1.LogicalName);

                    entitiesToPublish.Add(entityLink.Entity1.LogicalName);

                    try
                    {
                        entityLink.Entity2.IsAuditEnabled.Value = true;

                        await repositoryTarget.UpdateEntityMetadataAsync(entityLink.Entity2);
                    }
                    catch (Exception ex)
                    {
                        var desc = DTEHelper.GetExceptionDescription(ex);

                        content.AppendLine(desc);
                    }
                }
            }

            bool first = true;

            foreach (var entityLink in commonEntityMetadata.OrderBy(e => e.Entity1.LogicalName))
            {
                var query = from source in entityLink.Entity1.Attributes
                            join target in entityLink.Entity2.Attributes on source.LogicalName equals target.LogicalName
                            where source.IsAuditEnabled != null &&
                            string.IsNullOrEmpty(source.AttributeOf) &&
                            string.IsNullOrEmpty(target.AttributeOf) &&
                            source.IsAuditEnabled.Value &&
                            target.IsAuditEnabled != null &&
                            target.IsAuditEnabled.CanBeChanged &&
                            target.IsAuditEnabled.Value == false
                            orderby target.LogicalName
                            select target;

                foreach (var attribute in query)
                {
                    if (first)
                    {
                        content
                        .AppendLine()
                        .AppendLine("Enabling Audit on Attributes:")
                        .AppendLine();

                        first = false;
                    }

                    content
                    .AppendFormat(_tabSpacer + "{0}.{1}", attribute.EntityLogicalName, attribute.LogicalName)
                    .AppendLine();

                    entitiesToPublish.Add(attribute.EntityLogicalName);

                    try
                    {
                        attribute.IsAuditEnabled.Value = true;

                        await repositoryTarget.UpdateAttributeMetadataAsync(attribute);
                    }
                    catch (Exception ex)
                    {
                        var desc = DTEHelper.GetExceptionDescription(ex);

                        content.AppendLine(desc);
                    }
                }
            }

            if (entitiesToPublish.Any())
            {
                content
                .AppendLine()
                .AppendFormat("Publish Entities: {0}", entitiesToPublish.Count)
                .AppendLine();

                foreach (var item in entitiesToPublish.OrderBy(s => s))
                {
                    content.AppendLine(_tabSpacer + item);
                }

                var repositoryPublish = new PublishActionsRepository(_comparerSource.Service2);

                try
                {
                    await repositoryPublish.PublishEntitiesAsync(entitiesToPublish);
                }
                catch (Exception ex)
                {
                    var desc = DTEHelper.GetExceptionDescription(ex);

                    content.AppendLine(desc);
                }
            }

            content.AppendLine().AppendLine().AppendLine(_iWriteToOutput.WriteToOutputEndOperation(null, operation));

            string fileName = string.Format("OrgTransfer Audit from {0} to {1} at {2}.txt"
                                            , this.ConnectionSource.Name
                                            , this.ConnectionTarget.Name
                                            , DateTime.Now.ToString("yyyy.MM.dd HH-mm-ss"));

            string filePath = Path.Combine(_folder, FileOperations.RemoveWrongSymbols(fileName));

            File.WriteAllText(filePath, content.ToString(), new UTF8Encoding(false));

            return(filePath);
        }