The file containing only elevation contour lines that I downloaded cannot be displayed in LOCUSMAP after converting it to MAPSFORGE format. Please help me

hello all,

The file containing only elevation contour lines that I downloaded cannot be displayed in LOCUSMAP after converting it to MAPSFORGE format. Please help me.

After converting an 8.22MB .osm file to a .map file, it shrinks to only 2KB.
The tools I am using are osmconvert64-0.8.8p, osmosis 0.49, and mapsforge writer 0.20. Below is a portion of the code I am using.

osmconvert64 .osm --fake-version -o=.osm
osmosis --rx file=****.osm --mw file=
***.map type=hd

osm file xml

<?xml version='1.0' encoding='UTF-8'?> '''''''''''' ........... .......... rendertheme