diff --git a/Dalamud/Plugin/Internal/PluginManager.cs b/Dalamud/Plugin/Internal/PluginManager.cs
index 69fde3a25..2f46ae07e 100644
--- a/Dalamud/Plugin/Internal/PluginManager.cs
+++ b/Dalamud/Plugin/Internal/PluginManager.cs
@@ -378,6 +378,9 @@ Thanks and have fun!";
 
                     var manifest = LocalPluginManifest.Load(manifestFile);
 
+                    if (manifest.IsTestingExclusive && this.configuration.PluginTestingOptIns!.All(x => x.InternalName != manifest.InternalName))
+                        this.configuration.PluginTestingOptIns.Add(new PluginTestingOptIn(manifest.InternalName));
+
                     versionsDefs.Add(new PluginDef(dllFile, manifest, false));
                 }
                 catch (Exception ex)
@@ -386,6 +389,8 @@ Thanks and have fun!";
                 }
             }
 
+            this.configuration.Save();
+
             try
             {
                 pluginDefs.Add(versionsDefs.OrderByDescending(x => x.Manifest!.EffectiveVersion).First());