We've done the "Remove Extended Find" stuff... and you can maintain the existing Alias while correcting that.
For example... let's say you have this.
NameMapping.Sys.MyApp.MyPanel.MyButton
Aliases.MyApp.MyPanel.MyButton
The item in bold has the Extended Find turned on. You can, then, do this.
NameMapping.Sys.MyApp.MyPanel.MySubPanel.MyButton
Aliases.MyApp.MyPanel.MyButton
Where extended find is turned off and the sub panel is inserted. This will STILL work. The Alias does not have to match the mapping in hierarchy so long as the child objects are still in the tree. This is how Aliases are intended to work where you can "telescope" long hierarchies to be more easily utilized.