With the integration enabled, all your Family Leads and Family Matters in EvolveGo will have a corresponding Matter in FamilyProperty.
This happens as soon as you create a Lead/Matter in EvolveGo, and changes you make to the Lead/Matter in EvolveGo will sync across to the Matter in FamilyProperty.
However, if your firm historically used FamilyProperty but you are new to EvolveGo, you may have some existing FP Matters that were created without a linked EvolveGo Lead/Matter.
If this is the case, please reach out to the support team for assistance linking up your EvolveGo and FamilyProperty data.