Allow me to mark certain expenses as 'income' in a related account.

Detail:
* My use case has a number of different accounts (chequing, savings, business, etc.) and I am frequently transferring money between accounts and trying to make sure I don't overdraw anything. I'd like the ability to mark a certain transaction as a 'transfer' which I would enter once and it would automatically set up an expense on one side and income on the other side, linked so any updates would by synchronized.

Example -- transfer $5k from corporate chequing to personal chequing each month on the 15th -- I only need to set this up once, vs. today I need to set up a monthly $5k expense on the corporate chequing and a monthly $5k income on the personal chequing, and any time I modify one of them I manually have to update the other to stay in sync.

See also http://qapps.uservoice.com/forums/276969-user-ideas/suggestions/17528098-ability-to-create-accounts-and-transfers