Punchout Catalog product category - Default product category mapped

Hi,

Currently we are getting default product category even though punchout catalog is sending different prooduct categories?

We are using UNSPSC categoires and even punchout categories also same but default product category is coming not the punch out product category. Please note that if i click on Describe requirement then one default product category is coming up so same product category is coming for punch out catalog items.

Can you please give me some idea how this is picking up.

thanks

Ravi