Calculation items format issue on composite model

[setis]

I have a calculation group in model A which outputs some calculation items in decimal numbers and others in percentage. 

The measure that this calculation group is based on is on "Decimal number" format. 

Using tabular editor, the calculation items to be shown in decimal number have the Format String Expression as SELECTEDMEASUREFORMATSTRING() and those in percentage as "0.00%;-0.00%;0.00%"

Everything works as it should in Model A. 

I've created a composite model with Model A and Model B and the same calculation group is showing all the calculation items as decimal number. 

What am I doing wrong?

[JirkaZ · Accepted solution]

I think you might be dealing with some of the limitations mentioned here: 

Using DirectQuery for datasets and Azure Analysis Services (preview) - Power BI | Microsoft Docs