Hello !
Not sure what you want to do at the end.
So some few hints ...
QR make a new mesh and blink the original one (check the outliner).
You can delete the old one if you want.
This new mesh is part of your project, so you can save it as a blender file.
You can also export it directly in the format you need.
File -> Export. FBX / Obj
In the export box, in the right upper corner check "selection only" to avoid exporting the entire project.
If you need to pose or animate, you have to parent (autoweight) it with the existing DAZ rig.
Make your pose and/or animation. And export FBX.
If you need to keep the textures, first save the project as a packed one "file->external data->pack ressource".
All the textures will be regrouped within the blender file, no matter where they come from your HD.
Reopen and "external data -> unpack". Then you will have a unique folder with all the textures.
If I'm not clear, feel free ton contact me.
Daniel.
PS: We are now on Blender 4 so 2.93 is a little outdated. ๐