Actually I believe there was, and it may have been removed. It wasn't really worth it anyway since you could only transfer an extremely limited amount at a time.
empty Ark to transfer Coins of Free Traders to your Incarnations instead ?
All items available at the Exchange cannot be handed
directly to other characters - including your Incarnations. However, you
can use an empty Ark to transfer Coins of Free Traders to your
Incarnations instead. This is the one