Update agent from SCoM 2007 to SCOM 2012

Expets,

We have SCOM 2007 R2 CU7on 1 server.

we installed another single SCOM 2012 r2 on another server.

when i push the agent from the SCOM 2012 to machine still monitored by SCOM 2007, the machine appear in pending management under device management under  setting tab

but when i remove the SCOM 2007 manualy, there is no problem and the installing of SCOM 2012 agent done successfully

any way to make SCOM 2012 agent automatically without remove SCOM 2007 agent ?

Ahmad Samir | MCSE 2003 | MCTS: Exchange 2010, MCTS: Lync 2010. MCTS: SCOM 2007