Dennis Davis wrote:
Possibly under some nosy government guidelines to make it easy
to track what I spend on Internet cryptography, drugs, arms, drink
and loose women...not necessarily in that order...

It's a better combination than internet women and loose cryptography

More likely, if they process it as a customer deposit it counts as a transaction under their daily workload targets; if they just swap the money it takes them time which their manager will wonder what they've spent doing.

Owain