diff --git a/SeaHavenIndustries.Tests/WorkOrderBoardCreateRelationalTests.cs b/SeaHavenIndustries.Tests/WorkOrderBoardCreateRelationalTests.cs
index 3269309..d91794e 100644
--- a/SeaHavenIndustries.Tests/WorkOrderBoardCreateRelationalTests.cs
+++ b/SeaHavenIndustries.Tests/WorkOrderBoardCreateRelationalTests.cs
@@ -134,6 +134,72 @@ public class WorkOrderBoardCreateRelationalTests
         Assert.Empty(await verify.Dispatches.AsNoTracking().ToListAsync());
     }
 
+    [Fact]
+    public async Task Create_WithVendor_PersistsPrimaryDispatchOwnershipForUpliftResolution()
+    {
+        await using var connection = new SqliteConnection("Data Source=:memory:;Foreign Keys=True");
+        await connection.OpenAsync();
+
+        var options = new DbContextOptionsBuilder<ApplicationDbContext>()
+            .UseSqlite(connection)
+            .Options;
+
+        await using (var context = new SqliteBoardTestDbContext(options))
+        {
+            await context.Database.EnsureCreatedAsync();
+            context.Users.Add(new ApplicationUser
+            {
+                Id = "actor-1",
+                UserName = "actor-1",
+                NormalizedUserName = "ACTOR-1",
+                Email = "actor@test.local",
+                NormalizedEmail = "ACTOR@TEST.LOCAL"
+            });
+            await context.SaveChangesAsync();
+            await WorkOrderAccountTestHelpers.EnsureAccountAsync(context);
+            await WorkOrderAccountTestHelpers.EnsureLocationAsync(context);
+            context.Vendors.Add(new Vendor { Id = 5, CompanyName = "Acme HVAC" });
+            await context.SaveChangesAsync();
+        }
+
+        WorkOrderBoardRowDto result;
+        await using (var context = new SqliteBoardTestDbContext(options))
+        {
+            var boardData = new WorkOrderBoardDataService(context);
+            var resolver = WorkOrderAccountTestHelpers.Resolver(context);
+            var fieldLocks = new WorkOrderFieldLockService(new WorkOrderFieldLockDataService(context));
+            var service = new WorkOrderBoardCreateService(
+                boardData,
+                new WorkOrderBoardMutationDataService(context),
+                new WorkOrderBoardService(boardData, resolver),
+                new WorkOrderAuditService(new WorkOrderAuditDataService(context), fieldLocks),
+                new WorkOrderBoardCreateValidation(),
+                resolver,
+                new WorkOrderPocDataService(context));
+
+            result = await service.CreateAsync(new WorkOrderBoardCreateRequestDto
+            {
+                WorkOrderType = WorkOrderType.PM,
+                SiteCode = "BK5",
+                LocationId = 1,
+                VendorId = 5
+            }, WorkOrderAccountTestHelpers.AccountUser(), "actor-1");
+        }
+
+        // SH-393: fresh context, committed state only. The primary dispatch must be owned
+        // by the work order so the uplift create/read scope resolves it.
+        await using var verify = new SqliteBoardTestDbContext(options);
+        var dispatch = await verify.Dispatches.AsNoTracking().SingleAsync();
+        Assert.Equal(result.PrimaryDispatchId, dispatch.Id);
+        Assert.Equal(result.Id, dispatch.WorkOrderId);
+
+        var upliftDispatch = await new UpliftDataService(verify).GetUpliftDispatchForWorkOrderAsync(
+            result.Id,
+            result.PrimaryDispatchId,
+            CancellationToken.None);
+        Assert.Equal(dispatch.Id, upliftDispatch?.Id);
+    }
+
     private sealed class SqliteBoardTestDbContext : ApplicationDbContext
     {
         public SqliteBoardTestDbContext(DbContextOptions<ApplicationDbContext> options)