Merchant Management API — Update Merchant — Partners can now change a sub-merchant's details via PUT /v2/merchants/{id} instead of the dashboard. name and email are required on every call; type is fixed at creation and is ignored if sent, so a representation read from Show Merchant can be sent straight back. Two behaviours to be aware of before you integrate: a field you omit keeps its current value while a field you send empty is cleared, and changing email reassigns dashboard access — the new address is linked to the merchant (created and sent confirmation instructions if no account exists yet) and the previous address is unlinked from that merchant, though its account and any other merchants it belongs to are untouched. All merchant responses — list, show, create and update — now also return an updated_at timestamp. See Update Merchant.