An uncapped revenue meter
Partnero's own words: unlimited partners, transactions and revenue, the same flat fee however big the network gets. That is true, and Referly does not match it. Startup covers up to $10,000 a month in affiliate revenue and Business up to $30,000, with Enterprise above that. If your program is well past $30,000 a month, price both properly before you move.
Commission structures
Rebuilt by hand, as on every migration from every tool.
The historic click log
Not importable from any tool. Click and conversion-rate charts start on cutover day.
Portal branding
Rebuilt. Referly's portal takes branding, custom CSS and a custom domain on Business and above.
Partners and their details
Names, emails, payout emails and status, over the API.
Referral codes and links
The code survives; the domain it points at changes.
Per-partner commission rates
Arrive as per-affiliate overrides rather than collapsing to one program rate.
Customers, sales and commissions
With their original dates, so the history you built on Partnero is still the history you report on.
Paid payouts
Sales you import can carry their paid status, so nobody is paid twice. The payout records themselves stay behind.
Unpaid commissions
Import them marked unpaid and pay from Referly, or pay them out of Partnero first.
Commission structures are rebuilt by hand on every migration, from every tool, including this one. And to say the first row once more plainly: Partnero's flat, uncapped fee is a real advantage, and it is the reason some readers of this page should stay where they are.
program into 
Rewardful
FirstPromoter
Tolt
