Airframes missing in px4fmu-v2

I am trying to add a new airframe as per documentation but it fails to be uploaded to romfs. I did make clean. In nsh I go to etc/init.d/airframes and see only a small list.

[09:07:30:867]  -r--r--r--      58 3000_generic_wing␍␊
[09:07:30:883]  -r--r--r--      72 11001_hexa_cox␍␊
[09:07:30:899]  -r--r--r--      70 6001_hexa_x␍␊
[09:07:30:899]  -r--r--r--     476 24001_dodeca_cox␍␊
[09:07:30:915]  -r--r--r--     524 4011_dji_f450␍␊
[09:07:30:959]  -r--r--r--     460 2106_albatross␍␊
[09:07:30:959]  -r--r--r--      70 9001_octo_+␍␊
[09:07:30:959]  -r--r--r--      70 8001_octo_x␍␊
[09:07:30:975]  -r--r--r--      70 14002_tri_y_yaw-␍␊
[09:07:31:001]  -r--r--r--      70 7001_hexa_+␍␊
[09:07:31:001]  -r--r--r--     524 4010_dji_f330␍␊
[09:07:31:031]  -r--r--r--     118 2100_standard_plane␍␊
[09:07:31:031]  -r--r--r--      66 5001_quad_+␍␊
[09:07:31:031]  -r--r--r--     973 1000_rc_fw_easystar.hil␍␊
[09:07:31:073]  -r--r--r--      66 4001_quad_x␍␊
[09:07:31:073]  -r--r--r--     241 1001_rc_quad_x.hil␍␊
[09:07:31:089]  -r--r--r--     929 4050_generic_250␍␊
[09:07:31:115]  -r--r--r--      72 12001_octo_cox␍␊
[09:07:31:115]  -r--r--r--     950 50000_generic_ground_vehicle␍␊

The list of airframes in CmakeLists.txt is much bigger. Why are some ignored and where are the ignores configured?

Thanks