When I was working for Thomson Reuters WestLaw they sold the Danish/Swedish holdings and we had to move off the platform we had just spent a year moving onto (the sale happened about 7 months after the move was completed), we had one year to move off or we would have had to pay approximately $180,000 a month for using their platform (approximately as being represented in DKK not USD), of course we managed the move and also managed quite a lot of added business value.