I recommend removing both dimensions from the report columns and defining new calculated measures instead. For the number of issues with “Yes” in Test Data Created/Available the formula could look similar to the one below:
([Measures].[Issues created],
[Test Data Created/Available].[Yes])
You can define similar calculated measures for Tes Data Definition Completed or even a combination of both. For example, to retrieve the number of issues with both fields marked as “Yes”, the formula could look similar to the one below:
([Measures].[Issues created],
[Test Data Created/Available].[Yes],
[Test Data Definition Completed].[Yes])
Then, you can use these calculated measures in your report on a single level.
Please look at our documentation page for more information on defining calculated measures - Calculated measures and members.