Consolidation stopped working

In the end - when you finally find it - it will probably be quite simple. Happens to everyone. All one can do is keep digging. 

You can also use a copy of this app in DEV and replicate the issue with a single data point. As you say, some data is rolling up, other data is not. Replicate both and see what the difference is. Translation you have checked (very often people forget to populate FX rates). Is it P&L data? Balance sheet data? ...