I’ve already seen that post you’ve linked. It didn’t help, as it didn’t pertain to my issue at all.
As described in the title and in the post, they are unresolved linker errors (LNK2019) pertaining to any of the FFbxImporter:* functions that my plugin attempts to use.
The includes aren’t an issue. The compiler finds them perfectly fine, but the linker can’t find the libs for the functions defined in "Editor/UnrealEd/Private/FbxImporter.h"