Ffmpeg not copying location metadata

Question

I'm converting vidoes and even though I"m using -map_metadata 0

ffmpeg -i input.mp4 -map_metadata 0 output.mp4

The above code defaults to libx264/libvo_aacenc.

The location metadata is not copied, even though ffmpeg recognizes it.

Metadata:
major_brand     : isom
minor_version   : 0
compatible_brands: isom3gp4
creation_time   : 2014-03-15 21:38:04
location        : +30.0854+037.8395/
location-eng    : +30.0854+037.8395/

The output.mp4 has this metadata

Metadata:
major_brand     : isom
minor_version   : 512
compatible_brands: isomiso2avc1mp41
creation_time   : 2014-03-15 21:38:04
encoder         : Lavf55.50.100

I've tried using

ffmpeg -i input.mp4 -f ffmetadata FFMETADATAFILE

which copies the metadata and the location but then when I copy it back to

ffmpeg -i output.mp4 -i FFMETADATAFILE -map_metadata 1 -codec copy outputNew.mp4

The location does not copy.

P.s Also why does ffmpeg by default (when not using -map_metadata 0) not copy the tagged date but rewrites it with the conversion date, I assume people want to know when the video was taken not when it was converted.