import Order in HT

Hello,

I installed the connector openLabs.it works great.
But i have a problem when i import order.
prices are imported in HT and considered in TTC.

exemple Order in magento taxe 8%: 
ttc :26,90
ht : 24.90

in openErp :
ttc :24.90
ht : 23.05

It's stranger.

Thank you
hoping that you help me.
