diff --git a/Content.IntegrationTests/Tests/_DV/MappingCategoryTest.cs b/Content.IntegrationTests/Tests/_DV/MappingCategoryTest.cs
index a4f0294755c..68d645fb676 100644
--- a/Content.IntegrationTests/Tests/_DV/MappingCategoryTest.cs
+++ b/Content.IntegrationTests/Tests/_DV/MappingCategoryTest.cs
@@ -81,7 +81,6 @@ public sealed class MappingCategoryTest : GameTest
 
                     foreach (var uid in maps)
                     {
-                        maps.Remove(uid);
                         entMan.DeleteEntity(uid);
                     }
                 }
diff --git a/Resources/Migrations/migration.yml b/Resources/Migrations/migration.yml
index 1e2e3328496..c6c933e1de0 100644
--- a/Resources/Migrations/migration.yml
+++ b/Resources/Migrations/migration.yml
@@ -767,7 +767,7 @@ RightLegSkeleton: null
 OrganRatStomach: null
 TorsoHuman: null
 BoxBuildABuddyHuman: null
-LeftLegSpider: null
+LeftLegSpider: OrganArachnidLegLeft
 
 # 2026-01-14
 HeadHuman: OrganHumanHead