SYMPTOM
A user creates a report with the Region attribute and Cost metric, as shown below:

When the user drills on Southeast -> Down -> Call center, the results show Atlanta and Miami as the Call Centers, as shown below:

The original report is viewed in graph mode, as shown below:

When performing the same drill, the results are different and show all Call Centers, as shown below:

CAUSE
This is a known issue in Strategy Developer 94.1 and 10.X
ACTION
Contact Strategy Technical Support for an update on the status of this issue.