Hi @Trav,
there are two things that do not work with the _Undo command in combination with NamedSelections:
- If you delete selected objects that belong to NamedSelections, the NamedSelections are deleted or updated depending on what is saved in the named selection. If you try to undo the operation the NamedSelections are not recreated. Sometimes I get one or two NamedSelections back, if I repeat the undo command, but definitetly not all of them.
- If you delete a named selection or only a certain type within a named selection, you cannot undo this operation.
This behaviour is identical in Rhino 7 and Rhino 8. You can reproduce it with any kind of simple Rhino model. Just create a couple of NamedSelections of Breps and BrepEdges.