Very interesting, I didn’t catch this back when they introduced the improved air wall. But what exactly is the problem with splitting the solar load back into two rooms? Is the problem that there’s no way to identify the original two rooms when it’s renamed? Also where is this beviour described in the documentation? I can’t seem to find any reference to this renaming behaviour in the EP I/O for the air wall[1]
[1] Group – Surface Construction Elements: Input Output Reference — EnergyPlus 9.5