Share your thoughts on DirectQuery for Power BI datasets and Azure Analysis Services (preview)

I ran som more tests.
Created a calculation group  in the model and deployed it to AAS.

When connecting PowerBI to the model I can use the calculation items in new measures definition.
When adding an excel file as extra source (composite model) the measures in the model using calculation items still work. (YTD PY),

and I can use them in new measures definitions on measures in the model too.
But they cannot be applied to the measures (Budget Value) coming from the excel file.

This looks great.
The calculation group defined in the model still works and can be used on measures in the model.
If they don't on the measures from the added source, is acceptable.

Based on this we can continue our developments with the calculation groups.

looking forward to the final version of composite model.