When a child (e.g. a Wall) of an ArchBuildingPart (e.g. of a Level)
had both 'Move With Host' and 'Move Base' enabled, it failed to move
the base (e.g. Line) of the child, and only displaced the child
itself (effectively ignoring the 'Move Base' setting).
Example project structure:
Level
|
+- Wall ('Move With Host' = true, 'Move Base' = true)
|
+- (base of Wall) Line
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