Poser generates a 'temporary' PZ3, sends a big 'sorta-OBJ' file and all textures etc to the remote 'Box'. It skips files 'Box' already has...

Note a complex scene, such as my recent 'Yay !', with four (4) well-behaved (!!) FBX Anime imports plus LaF in casual/combats, may take almost five minutes between setting the render image destination and anything obvious happening. Much, much admin in progress...

So, like says on cover of 'Hitch-Hikers Guide', Don't Panic !!