@DeepPlanningClone works on a field/getter of List<Foo>: should it deep planning Foo too automatically?

I have a fact class, Pools, that contains the anchor variables for my problem (virtualMachines). On the solution class, I have a pools collection.
I need to deep clone the pools so that planner can work, otherwise I get duplicate entities in the solution (see StackOverflow).

When adding @DeepPlanningClone on the pools field, it doesn't work, but adding it on the Pool class does.