Use both service and standalone agent

Use both service and standalone agent simultaneously in the same computer

I need to have two servers with OCS, one of them manages all the computer of the network and all computers use the Service version deploy

But also i need that some computers be inventoried using stand alone deploy (through  logon script) (or somehing else) sending their inventory to another server because i need to have access to the information of this computers separately

When i try send the inventory using OcsLogon with the URL of the second server
i got this messages

Parsing command line arguments...OK
Searching OCS Inventory NG Agent installed version...OK (2.0.4.0)
OCS Inventory NG Agent version 2.0.4.0 already installed, skipping setup.
Windows automatically starts OCS Inventory NG Service, no need to launch Agent.
All done, exiting ;-)

The server doesnt receive the inventory
So ¿is there a way that i can afford my requeriment ?

Thanks in advance

Server Version:

OCSInventory 2.4

Agents:

OCSNG-Windows-Agent-2.0.4 (Services)

OCSNG-Windows-Agent-2.1.1.1 (Stand alone).