Difference in dimensional expressions between RS8.2 and 8.3

We are just upgrading to Cognos 8.3 (I know, I know...) and I've just found this difference in the use of the filter() function:


I think it actually makes more sense in 8.3... probably that's why they fixed it.

Code in 8.2

filter(
[My Dimension].[My Hierarchy].[My Level],
roleValue('_businessKey', currentMember([My Dimension].[My Hierarchy])) contains ?Param1?
)


Code in 8.3

filter(
[My Dimension].[My Hierarchy].[My Level],
roleValue('_businessKey', [My Dimension].[My Hierarchy].[My Level]) contains ?Param1?
)

In 8.2 one had to use the currentMember() function to refer to the member being filtered.
In 8.3 it is not needed. Instead one can just use the level.