In issue1150, we saw a case where the original task satisfied a property (in that case that prevail conditions do not explicitly mention the precondition fact as an effect), but a task transformation of the task did not.
This is a reminder that once we finalize the list of properties we expect a task to have, we have to decide if we want all task transformations to maintain these properties (with the possible exception of transformations meant only for internal use).
Currently, task transformations that are not exposed to the user level cannot be freely combined with all plugins because they may violate assumptions in places were it doesn't matter in the situations they are currently used in.
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