Multisite: cant export ata settings bec of website in a subfolder

Hello,

I have just moved the website I manage to multisite network. I first had some problems of broken links because our main website is not in the www but in a WP subfolder (http://francelyme.fr/WordPress3/). I solved this problem and the admin panel works now.
But I would like to export Ata settings from the main site to import it in the new ones but the link to export http://francelyme.fr/?bfa_ata_file=settings-download doesn't work any more...
Do you have ideas to be able to export settings file...?

Thanks a lot for your answer!