Change the order of sources in the pipeline
When using Paraview to compare multiple datasets, the order in which they appear in the pipeline is the order in which they are loaded. Thus, if a dataset needs to be unloaded and replaced with another, the new dataset is placed at the end of the pipeline rather than where the dataset it replaces was. This can lead to confusion when working with multiple similar datasets, as the order of appearance in the pipeline may not correspond to the logical order of the datasets (be it because of variations in the datasets themselves or in the way that they are arranged in the display panes). It would therefore be useful to be able to change the order in which the sources appear in the tree view of the pipeline.
I believe this now works, and actually has for a long time.
* Open can.exo.
* Right click Clip, Change Input, selecting disk_out_ref.
* There is a trivial bug that requires you to torn visibility off for the original disk_out_ref.exo.
Drag and drop of a pipeline parent seems to be such a straightforward thing that it is surprising to see this very useful feature still awaiting implementation.