Upgrade a Listing Problem

[woolfie]

The program has a great feature that automatically calculates (based on a % value) the cost for a listing to be listed in extra categories.

Problem: This only works for a new listing.

My business model is to give free basic listings initially and to upgrade them when they see the benefit of being part of the directory.

Problem: The Upgrade a Listing code calculates only the changes of period (time) and/or level (premium or sponsored) but not for increasing the number of categories as it does with a new listing.

I would think that since it is available (and works great) for a "Add a Listing", it should be for "Upgrade a Listing", too.