Just select them(albeit shift/ctrl pick one at a time), then use the style
pulldown to change them.
The style can also be changed during placement of the dims.
QBZ
"Gary Cross" wrote in message
news:6425EE10EC658E090842A6BFC2565633@in.WebX.maYIadrTaRb...
> How do you change existing dims on an IDW to a another dim style that
> already exists? If I click 'New Style' from RMB I can only create a brand
> new dim.style.
>
> Thanks.
>
> Gary
> gcross@crossdesign.com
>
>