Losing Drawer fronts when openings are adjusted

[Scott Marshburn]

I have a 4 Stack drawer Cabinet that I have set the top opening to a specified height and equalized the remaining 3 openings in face frame editor. When I Change the Cabinet height from 34 1/2 to 30 high the openings are no longer equal and the top opening is not what I had it set to previously. Then I change the top opening to the specified height and equalize the remaining 3 openings I then loose The fronts. Is this something that can be avoided or even better Fixed?

[Scott Marshburn]

No Fronts are lost when the mid rails and/or style widths are changed just when the openings are manually adjusted. The fronts stay when the cabinet size is changed .I can see why this would happen when adding openings.
I am no programmer but it seems like there should be some way to have the fronts and doors stay when the openings are manually adjusted especially when they stay with the openings when the cabinet is resized and or the rails and styles sizes are changed.