We recently moved from IC 5 version to IC6 . I see that in this version ruler is being removed upon using the undo command where as this not the case in IC5 , is there a way to avoid this.
No I don't think prevent the ruler from deletion in 6.1.X is possible, as the ruler nowis an OpenAccess database object. But in the "Objects Palette" you can disable it form being selecable, this will preventit from being delted by mistake.
Edit:Sorry misunderstood the question, but anyway you can't exlculde the "create ruler" command form the undo.