ASM policy sync on non HA pairs using trust-group

If I setup a trusted device group across availability zones for the sole purpose of syncing ASM policies, will anything else get synced that I dont know about if I choose auto incremental sync-only. Or will only the ASM policy get synced if I set that up under Application Security/synchronization? I dont want it trying to sync anything else. This is a non HA pair in different zones.

Thanks