AppFolio syncs portfolio and contacts to Property Meld
Maintenance happens in Property Meld
Property Meld syncs maintenance artifacts to AppFolio
Accounting happens in AppFolio
For each object, we must keep one source of truth, AppFolio or Property Meld. So even though the integration is "two way", for any given object it's only one way.
For example, updating a property in Meld does not update it in AppFolio, and updating a work order in AppFolio does not update the meld.