Keep their payments stack if it is already live. Map clients, work, and time on Practice → Import. ficary billing stays on Connect. No second payments stack.
Nominative guide, not a partnership. No API keys, no endpoint list, no importer internals. Those stay behind login for clients. Tax prep stays last. ficary has not earned SOC 2, ISO 27001, or a HIPAA attestation.
The move
If Aiwyn already collects, leave that rail until you are ready to use ficary Pay Now.
Export clients, engagements, and open AR.
Map clients first, then work, then time. Opening WIP keeps its incurred date.
Do not stand up two ways to take a card.
Stay on Aiwyn when
Choose Aiwyn when practice management stays put and you only want bill-to-cash to move.
Move when
Choose ficary when as-of WIP and realization have to agree with the invoice the client pays.