Assign copy of form the same URL as original

Hello,

I have a form that I copied over to edit so that I didn't have to close the form while making extensive changes to it.  Is there any way that I could make the copy have the same URL as the original one?  The URL has been distributed to many users so it will be difficult if we change that.

In the future we are going to have a central repository with links to the forms, so that the URL's can be different and it won't affect anything.  But for now, we have to deal with this issue.

Thanks.