Hi Hookflash, You are right. The attachment is Daz Export option. Reallusion
I think I found the solution: When exporting from Daz Studio, the "Merge clothing into figure skeleton" option has to be selected. This seems to fix the issue.
Thank you for your feedback. Please provide your FBX file to help us identify the problem.Attach the file in your next comment. If the file size is larger than 10MB, you can use cloud services such as Google Drive, Dropbox or OneDrive to make the files available to us and put the link in your comment. You can use Private Comment if you want to keep it private. Your help is highly appreciated. Reallusion