I recently updated my iPad to the new OS and it completely cleared my iPad of. All my apps. I'm not sure it was supposed to do this but wasn't a problem as they are easily retrievable. However there was one app which I had bought an in app purchase and when I retrieved the app it didn't come with what I'd added. (it was a baby signing app and I'd bought an in app purchase so it shows more signs ) Is there anyway to get this back without buying it again?