Entity Framework Cascade Delete Issues

DBContext:
public DbSet<ProductNode> ProductNodes { get; set; } = null!;
public DbSet<VirtualStore> VirtualStore { get; set; } = null!;
modelBuilder.Entity<ProductNode>()
    .HasOne(lpn => lpn.VirtualProduct)
    .WithOne()
    .OnDelete(DeleteBehavior.Cascade);

....
BackgroundService:
vphContext.VirtualStore.RemoveRange(virtualStoresInUse);
vphContext.ProductNodes.RemoveRange(nodesToRemove);
await vphContext.SaveChangesAsync(stoppingToken);

vphContext.VirtualStore.AddRange(newStores);
vphContext.ProductNodes.AddRange(newProductNodes);
await vphContext.SaveChangesAsync(stoppingToken);