Hi Brian,

> Does this have to do with how "history" works?

It does - the history function right now is limited to work with commands that produce just one output object, if there were multiple output objects generated from a single command that will not be handled currently by history updates. That is something that I want to improve in the future, but I may undertake a more significant history overhaul rather than trying to just patch up the current mechanism much more.

- Michael

I think that answers my question thanks Michael. The geometry is indeed one in which there were 2 objects created - if I rework the sweep the history is maintained which works for me!

- Rich