(Copied from original User Voice forum)
"In Rigging and also other areas of CG you sometimes connect nodes of different type / units, e.g. a multiplyNode to a rotation of an object.
Maya automatically under the hood creates unitConversion nodes. These can be turned off in the Hypershade / Hypergraph under Show -> Auxilary Nodes (and be added to the hide list). This is useful for keeping the graph less cluttered. Typically the unitConversion nodes can be ignored anyway.
However, Mayas NodeEditor does not respect the settings in the hideList, like the Hypershade and Hypergraph.
Therefore, there seems to be no way to hide the unitConversion Nodes in the NodeEditor. There is also no add remove from graph in the nodeEditor (like we do have in the hypershade). Then you could at least select all the unitConversion Nodes and remove them from the graph manually, which would at least be a workaround.
Ideally the NodeEditor should respect the settings in the Auxillary Nodes Hide List."
