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Use the `GetPaymentUseCase` to get the payment data, instead of asking the donation/membership for payment data. For the payment-specific values you probably need to do more than an `array_merge`: Compare the array keys of the payment specific data to the array keys expected by the template and assign the values where the keays differ (to keep backwards compatibility)

Use the `GetPaymentUseCase` to get the payment data, instead of asking the donation/membership for payment data. For the payment-specific values you probably need to do more than an `array_merge`: Compare the array keys of the payment specific data to the array keys expected by the template and assign the values where the keays differ (to keep backwards compatibility with the frontend code)

Use the `GetPaymentUseCase` to get the payment data, instead of asking the donation/membership for payment data. For the payment-specific values you probably need to do more than an `array_merge`: Compare the array keys of the payment specific data to the array keys expected by the template and assign the values where the keays differ (to keep backwards compatibility with the frontend code)