(8.18.25070.14001, 2025-03-11)
In the attached file a simple chain link polysurface and a leader. The chain link is on the current “Chain” layer, there is a second layer “Section” that is not current.
With Record History on:
Using the Section command, make a vertical section where indicated by the leader. The result is two circles on the “Chain” layer. Now, with the circles selected, right click on the “Section” layer in the layer panel and choose “Change object layer”. The command line says “History updated 2 objects.” Look in the properties panel - the circles are still on the “Chain” layer. Turning the section layer off proves it, the curves are still there.
Now, run Undo a couple of times. The command line says:
Command: _Undo
Undoing Section
Nothing to undo.
The section curves are however still there.
HistoryLayerBug.3dm (3.0 MB)