Upgrade after custom development
I am using classipress and have had a developer do some work to customise the ad packs. i.e. Users who advertise on the site can now select any category to advertise in, and then select from 3 different advertisements... (basic listing, picture listing or premium listingm - each has a different cost to the advertiser).
I had the work done when I had the Classipress personal edition, but have now purchased the Small Business Edition.
How can I activate the upgrade without overwriting all the developement work that has been done? Any Ideas?