Why not just use the Poser Format Exporter (PFE)?  It is expressly for export of DAZ poses to Poser head, hand and pose files.

It's free.

Here's a link:

www.daz3d.com/i/3d-models/-/poser-format-exporter

Cheers.

Lotus 123 ~ S-Render ~ OS/2 WARP ~ IBM 8088 / 4.77 Mhz ~ Hercules Ultima graphics, Hitachi 10 MB HDD, 64K RAM, 12 in diagonal CRT Monitor (16 colors / 60 Hz refresh rate), 240 Watt PS, Dual 1.44 MB Floppies, 2 button mouse input device.  Beige horizontal case.  I don't display my unit.