Returns the profile to the state it was in when you entered the Profile environment. All the original geometric and dimensional relationships are reset when you undo the profile. Any changes you have made to the profile geometry or any additional geometry that has been created will be lost.
Note:
The Undo All command is enabled by default. To disable the command, on the General tab of the Options dialog box, clear the Enable "Undo All" For Profile/Layout Modifications box.