I agree with vMLH assuming you don't need to keep folders permissions or resource pools on 2 then just disconnect the host from vcenter 2 and add to vcenter 1 and your done. (Again you will have to have the same CPU type and may have to use EVC)
Joseph Griffiths
http://blog.jgriffiths.org
@Gortees
VCDX-DCV #143
