Edit Bitmap when CDGSX6 & X7 is on the same machine

For those of you that have CDGS X6 and X7 on the same computer...Is there a way that I can have the Edit Bitmap open in its corresponding Photo-Paint version? 

I've tried running a repair on CDGSX6 and CDX6 will then open PPX6 when using Edit Bitmap. But then...when I use Edit Bitmap in CDX7 it opens PPX6. Okay, so I run a repair on CDGSX7...and I am back where I started -- PPX7 opens when I use Edit Bitmap in CDX6!

Is there anyway to fix this?

What I  really wish...is that the programmers would fix this issue for future versions. Many users keep previous versions on the machines, right?

Patti