Is there a way to set an order for FieldManager.UpdateChildren()?

[michaelcsikos]

I'd like one child collection to be saved before another one, but the default order is doing it in the opposite order.

[michaelcsikos]

public void UpdateChild(object child, params object[] parameters) would be useful, too.

[Chicagoan2016]

I think you answered your question : ). The method you mentioned is indeed
DataPortal.UpdateChild(object child, params object[] parameters)

[michaelcsikos]

I don't see the equivalent method in CSLA 8.

[Chicagoan2016]

It looks like it's part of ChildDataPortal now. (I haven't tried the latest Csla in production applications, we have several apps in Csla 4.xx)
ProjectResourceUpdater.cs has an example.