Update naming and remove used calls

src/Managing.Application.Abstractions/Grains/PlatformSummaryGrainState.cs

@@ -63,7 +63,7 @@ public class DailySnapshot
 
     [Id(5)] public decimal TotalOpenInterest { get; set; }
 
-    [Id(6)] public int TotalPositionCount { get; set; }
+    [Id(6)] public int TotalLifetimePositionCount { get; set; }
 
     [Id(7)] public int TotalPlatformFees { get; set; }
 }