Fix backtest delete and save

src/Managing.Infrastructure.Database/MongoDb/MongoMappers.cs

@@ -14,7 +14,6 @@ using Managing.Domain.Users;
 using Managing.Domain.Workers;
 using Managing.Domain.Workflows.Synthetics;
 using Managing.Infrastructure.Databases.MongoDb.Collections;
-using MongoDB.Bson;
 using static Managing.Common.Enums;
 
 namespace Managing.Infrastructure.Databases.MongoDb;
@@ -145,7 +144,7 @@ public static class MongoMappers
             WinRate = b.WinRate,
             GrowthPercentage = b.GrowthPercentage,
             HodlPercentage = b.HodlPercentage,
-            Id = b.Id.ToString(),
+            Id = b.Identifier,
             OptimizedMoneyManagement = Map(b.OptimizedMoneyManagement),
             User = Map(b.User),
             Statistics = b.Statistics,
@@ -164,7 +163,7 @@ public static class MongoMappers
 
         return new BacktestDto
         {
-            Id = (!string.IsNullOrEmpty(result.Id)) ? ObjectId.Parse(result.Id) : ObjectId.GenerateNewId(),
+            Identifier = result.Id,
             FinalPnl = result.FinalPnl,
             WinRate = result.WinRate,
             GrowthPercentage = result.GrowthPercentage,