Great question — answering as the UphillTech team:
The only way I know to transfer money between PayPal and Moneybookers directly would be to use a Moneybookers Mastercard and deposit with that on PayPal. The other way (PayPal to MB) is not possible directly, you will need to make a PayPal payment to a third-party (your company), that then makes an automated deposit on Moneybookers. This is possible with their API.
Full answer by Sire: https://stackoverflow.stackexchange.com/a/12251872 (CC BY-SA 3.0).
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