Answer: For RealScout's 2-way contact integrations, automatic contact sync will sync new leads added, matching your contact import settings [here].
If you or your team owner have configured the integration to sync all leads, RealScout will be able to sync all new leads created.
If you are using a tag or group-based configuration to limit who is synced over or updated regularly, check your settings and ensure you have tagged or grouped your leads in your CRM.
Backfilling, within the context of RealScout's BoldTrail, Cloze, Follow Up Boss and Rechat integrations, refers to synchronizing contacts into RealScout and reconciling your current database of people with your connected RealScout account.
This ensures that any contacts present in your CRM, prior to establishing the connection are, imported into RealScout.
If you have set your integration to bring leads in by tags or groups, the backfill option would be how to bring all your existing leads from your group/tag to RealScout. The same rules apply for leads needing an email address.
Notes:
Contacts you only have phone numbers for in your database will not sync, and can be sent one of your RealScout marketing links to sign up directly.
MoxiWorks Engage uses groups so if you are using RealScout with a MoxiWorks-enabled enterprise account, please be sure to group your leads in MoxiWorks before back fill/syncing.