Normal. You can replace an alias URI with a new URI, even if it is the same URI. I consider it a bug, but CfB says it is a feature
James
Why would you even consider that a bug?
What con's do you have in mind?
What value is there in changing an aliases URI to the exact same URI. Nothing changed, why should that get accepted? Why not get an error like "you must have submitted duplicate URI", especially if it happens very close in time.
James