Hi Danny,

Yes, the surface is still there but if the trim curve is within the boundry you can select and untrim it but if
it happens to run to the outer edges you are stuffed !!

>> For example I read in another post someone wanted to change a chamfer size after opening an already
>> saved model, we could then separate these surfaces that have the chamfer applied, then untrim to original
form, join, then apply the new chamfer size.

Yeah, a higher level of trim/untrim would be nice in MoI.....I think perhaps this kind of funtionality will come when
we start to see surface matching incorporated ???