Was iStockpro absorbed by getty or was it just dispanded? If the first, are the old istockpro people now getty ocntributors?
iStockphoto was purchased by Getty and since iStockpro was a direct price competitor (offering several of the same collections) it was considered redundant and basically shut down.
Exclusive iStockphoto contributors who have achieved diamond level are eligible to contribute to Getty's collection at a rate of 5 images per month. This program is slated to expand to gold level contributors, possibly over the summer.
Hope that helps.

Oh, and leaf, my earlier comment was not directed at you.
