Threading and LifetimeScope in nopCommerce 4.00

Hello everyone,
we are currently upgrading our plugin from nopCommerce version 3.80 and 4.00. We have one function, that needs to run in Thread (data transfer from/to our ERP).

In 3.80 we used:

 
using (var scope = EngineContext.Current.ContainerManager.Container.BeginLifetimeScope())
{
...
}

In 4.00 is missing EngineContext.Current.ContainerManager, so i tried to inject ILifetimeScope, but it fails, when you use EngineContext.Current.Resolve<TService>, GetServiceProvider() returns null. When i don't use ILifetimeScope, it offen fails in DbContext has been disposed exception.

Some advices, how correctly use threads?

Thanks Martin.

Taking back #2750.