"The functionality / report manipulation you are trying to use is incompatible with the report objects Evaluation Order settings. Please see documentation”.
CAUSE The reason for this warning message is that Consolidations are evaluated on the "dataset template" while subtotals are evaluated on the "view template". Both templates exist on the same level. However, once an attribute is removed from the grid, the report is converted to an OLAP report. As an OLAP report, the dataset template and the view template become separate entities which are evaluated at different levels.
ACTION / RESOLUTION This behavior is working as designed. In this scenario, only a change in the evaluation order will allow attributes to removed from the grid by evaluating the consolidation first.
KB40422