I was working with SQL Server 2008 R2 Version and I got hit by saving changes is not permitted â€¦wwhhhaaattt?
Seems like you have to look around and find Toolsâ€”> Options
And you will find this
Look there isÂ the â€œPrevent Saving Changes that require Table re-creationâ€. Uncheck that box and you should be good to go.