QTR-Quadtone RIP

I'm changing some default ink limits and gray overlaps to see what the
changes will be.  I start in Curve Creator by opening a .qidf file and
saving as another name.  Then I'll make some changes, run Create Curve
and save it but when I try to find the curve in the pull downs before
printing they aren't there.  I can see the files in the Profile folder
but they aren't showing in the QuadTone folder.  They should be there
right?  I see there are other curves that are in the profile folder as
.qidf but not in the QuadTone folder as .quad.  How come?

Thanks again,

Tom