How to block something from being affected by undo/redo?

[GamEditoPro]

Hello, I’m trying to fix bugs on my plugin. One of bugs I discovered was undo/redo. I partially fixed it, but still have 1 problem: plane and brush part are destroyed when you make undo. Is there any way to block this 2 objects from being removed with undo?

[yclii (Shadow)]

This is a studio AND a plugin problem that no scripting will solve. You can’t pretty much do anything about it, maybe search some related problems to it and you 'll find some techniqes that may help you.

[ketrab2004 (ketrab)]

Problems with Plugins, Selection, and ChangeHistoryService

First I’d like to thanks to @24RightAngles for resolving most of these problems by making ChangeHistoryService ignore non-Archivable instances. I’m able to develop really powerful studio tools for my game thanks to this. However, I’m still having occasional problems with LegacyLock while developing my game. It seems to happen when many instances are destroyed/created (It almost always happens when I jump to a new location and my studio map streaming system loads and unloads tens of thousands of…

… ChangeHistoryService ignore non-Archivable instances.

Apparantly ChangeHistoryService ignores instances that have Archivable set to false.

If that doesn’t work you can create the plane and brush parts when the plugin starts, before any history waypoints are created, so that undoing will only move them not remove them.