Upgrading from old Domain Mapping Plugin to new

Hi all,

I have a site that is using this plugin for domain mapping. Modified by Aaron and based on doncha's 0.4.3 domain mapping plugin, it provides a great explanation to supporters and non-supporters about the function of domain mapping and also allows for them to search and purchase their own domain name.

I'd like to either upgrade this plugin to include the updates in doncha's new 0.5 version, or use the premium plugin available on this site. My concern is switching to the version 2 plugin available here. Has anybody made this change? How did it go for you? Any errors or issues I might need to know about ahead of time?

Thanks for any input!