The extractor probably wouldn't work anyway, tested it today for a friend and got the following error message:
...0004331.map' is from an incompatible map version (MAPS v1.3), MAPS v1.4 is expected. Please recreate using the mapextracto
Either the code hasn't been updated / finished for v1.4 or it is simply a bug, here the link to the related file/line:
https://github.com/TrinityCore/TrinityCore/blob/4.3.4/src/tools/map_extractor/System.cpp#L376
The extractor is still using v1.3 as Version but the 4.3.4 core is asking for v1.4, that can't work.
In master (6.x), the same file is using v1.4
