Send to Zbrush sometimes not working fully

in New Users
Hello,
I recently got ZBrush 4R8 and its great. I just have a problem sometimes, when I send to Zbrush from DAZ it sometimes dosen't send all the things on my figure to ZBrush but just the selected one. On other times it sends it all and I don't know why it does sometimes and sometimes it dosen't. Can someone help please
Comments
Is there any difference in whether or not the items are parented to the figure? Are they props or fitted figures themselves?
They are mostly clothing that are parented to the figure. But it seems like if I restart DAZ and load the scene fresh it works more often. When I work on the scene a bit and then send it to Zbrush it usually dosen't work.