Polygon Mesh2sdf and again sdf2Mesh

[somdats]

Hello,
I am using the openvdb command line tool to convert a polygonal mesh( not volumetric) to a sdf ( level set) to generate .vdb files.
I am then using the vdb_view tool to visualize the vdb file,
The conversion works without any error, however, I do not get the desired output. Though I see the voxels across the entire length of my model, the output mesh when converting .vdb to .ply file has missing data, even on the vdb_view when I toggle different view, the surface view with option 2 also has the same data missing.
Initially, I tried to tune the voxel resolution from default 250 to higher and also playing with narrow band with from default value of 3 to higher, but no significant improvement is observed

command args:
vdb_tool -read /pathTo/assets/density_low_all_frames.obj -mesh2ls dim=512 -write output_test_512.vdb config.txt
vdb_view /pathTo/output_test_512.vdb
vdb_tool -read output_test_512.vdb -ls2mesh -write output_test_512.ply

Input frame:

Here are the results

Looking forward to your suggestion, ASAP