If I am not wrong, if you want to retarget animations to your DAZ character, first, make sure to enable the following options in Project Settings, DAZ to Unreal Settings below.
As a result of these two settings, your character will appear sideways as shown in the plugins folder (right image). That means any of your original animations from DAZ Studio will be broken, but you will be able to retarget animations to your character inside UE, as well as use IK retargeter, IK rig and control rigs provided by DTU plugin.
The only way I can possibly take advantage of DAZ figures is sending to Blender, change the rig from DAZ to UE4 Mannequin using Autorig Pro, and then send to UE. I use DTU only to send the original materials. That fix all issues with retargeting, plus I can use any control rig based of UE4 Mannequin. If my character has 52 facial ARKit morphs, I can use Windwalker Echo’s facial control rig.