Thanks yet again Richard.
Because the installers drop files in various folders I suppose my best bet is to go through the the Studio3 stuff and re-install the content into Studio/My Library, rather than try and copy files over. I can then delete the Studio3 folder.
Like you said I could leave it all as is now everything works just fine, but it just adds to the complication of trying to find stuff. Plus as you mentioned, anything nested could cause problems. It’s a good thing I haven’t installed tons of content.
Thanks for solving all my DAZ problems again Richard.