Working in a corporate IT dept with the usual lag in adoption especially with the suggested time frame of 2017 for Win7 this is a real problem Many of our apps are legacy adaptations and although they are updating stuff, having access to historical data that has been configured for particular systems could become an issue. ( Not all apps are created by or for MS ).
I ported several of them to browser access a while ago but they still need the app running at the server to supply the info.
Time to retire soon, can be somebody else's problem.