I need to migrate our Azure AD Connect service to a new server. The concern I have is the new version of the app contains config screens that aren't present in the old server application (1.4.18)
I plan on setting up the new install in staging mode for the time being, but I have concern regarding the below two options, neither the 'identifying users' nor 'Filtering' pages appear on my old server

This is an output from Get-ADSyncGlobalSettings from the old server

Identifying users, - I think the answer should be "Users are represented only once across directories" but we did an AD inter-domain migration some years back and I remember there was some talk about this but I can't remember if anything was changed. I can't see any equivalent setting on the old server
Source anchor - I think should be 'mS-DS-ConsistencyGuid' based on the output from old server
Sync devices, I think should be 'all users and devices', but again, I can't see any equivalent setting on the old server
Any assistance with this config is appreciated. Thanks