How to sort elements of Context Menu actions

Hello guys,

I have a weird problem with the Context Menu of the crosstabs. I'm working right now with DS 1.5 SP2.

The problem comes when I use the context menu for DrilldownBy for example. If you see the attached image, the elements (dimensions) of the Datasource are not sorted, neither alphabetically, neither by internal key (as HANA is my DataSource):

As you can see, all the dimensions are mixed and I don't know which kind of sort is using.

You have any info?

Thanks to all!