Adding OBX segment

Happy Friday!

I’m trying to copy several fields from an MDM message in TXA segments to a new OBX segment after any existing OBX sgements. I’m able to copy them, but I’m recieving errors MSH PID TXA segments # 16,17,18 out of order, I think I;m losing EOF when coping,when I remove the copy the message processes fine.  I beleave I need to add new OBX segments and then copy data.  Any help would be great.

Thanks,

Dan