archiving shop order

Hello:

we have shop orders containing more then 50 000 SFC

we can't archive by usinge DM530 activitity: the screen turns without stopping for 12hours: we obtain 2000 SFC archived, the others still in WIP DB.

We think to use ShopOrderArchiveServiceWS, that containes:

archive and archive2

Can you tell us the difference between two services

we have: 6.0.4.24 version

Thank you