Happily upgraded to 8.1 today, and hoping to use the new folders feature to organise my 100s of fields!
However when I'm connected to a cube/olap data source like a Powerpivot, I can't find the option to group by folders anywhere. It is there on a relational connection to MSSQL server, so wondering if it is missing because of the datasource.
That said, it doesn't say it should different in the knowledge base article on OLAP differences...but not sure that document is up to date.
Would be great to use it if possible so wanted to check I'm not missing anything.