Issue #1024: Correct configuration

Author: Serg046

src/BenchmarkDotNet/Configs/ManualConfig.cs

@@ -261,7 +261,10 @@ public void Add(IConfig config)
             columnHidingRules.AddRange(config.GetColumnHidingRules());
             Options |= config.Options;
             BuildTimeout = GetBuildTimeout(BuildTimeout, config.BuildTimeout);
-            AutomaticBaselineMode = config.AutomaticBaselineMode;
+            if (config.AutomaticBaselineMode != AutomaticBaselineMode.None)
+            {
+                AutomaticBaselineMode = config.AutomaticBaselineMode;
+            }
         }
 
         /// <summary>

src/BenchmarkDotNet/Reports/Summary.cs

@@ -73,7 +73,8 @@ public Summary(
 
         private static BenchmarkCase GetFastestBenchmarkCase(ImmutableArray<BenchmarkReport> reports)
         {
-            if (reports.Any() && reports.All(r => r.BenchmarkCase.Config.AutomaticBaselineMode == AutomaticBaselineMode.Fastest))
+            var baselineReport = reports.Where(r => r.BenchmarkCase.Config.AutomaticBaselineMode != AutomaticBaselineMode.None).LastOrDefault();
+            if (baselineReport != null && baselineReport.BenchmarkCase.Config.AutomaticBaselineMode == AutomaticBaselineMode.Fastest)
             {
                 var fastestReport = reports.First();
                 if (fastestReport.ResultStatistics != null)