problem with global categories

Hello,

I'm testing marketpress with mutisite configuration and global cart enabled ... evrything seems to work except global categories.

My products are indexed ... I can see products of network added in differents shop of the global market page ... but I can't see them in the global categories.

let see :
http://finance.scolastik.info/global-store/ (global store page) ... you can browse to global categories wih no succes ...

thx for your help !

Fulgence