The primary reason we are moving to extract from the OTBI PVO's is fewer issues with things like determining primary keys, duplicate data, etc. The Extracts have fewer issues in our experience. As for changes to the extracts, they add columns, but removal of columns isn't a big issue (at least for us right now). The bigger…

Columns get added all the time, the depreciation document lists additions to the VO's as well, and some of them are selected on the VO by default, but to my knowledge, it will never alter a job already setup. So if you already have a configured VO, it will stay that way until you alter it.