I work in Lightwave so export out of DAZ using FBX with the figure zero posed. I then export just the base pose only for the actual pose. It's somewhat like a preset.

Usually, the clothing item just drops as it would from gravity, but for this item it's as if a wind force is present from the right. Hard to tell, but your image might be showing some of that too. I didn't sim the Headdress and the Pants simmed just fine. I have the earlier version of ManFriday's Companion. I used a time range to give it more frame to relax with is all.

Even so, I got really good results with the posed figure.

Thanks for taking the time to test this.