Domain mapping and Pro Sites

Hi, I've installed a multisite network, and I've installed Domain Mapping plugin (http://wordpress.org/extend/plugins/wordpress-mu-domain-mapping/) before installing Pro Sites. I've noticed that there is also a Domain Mapping plugin at WPMUDEV, and I wanted to have a better understanding of the differences between them. Functionality seems to be the same, but WPMUDEV one includes the option to indicate if the domain mapping feature is allowed to supporters only. I'd like to have that feature, but I have some sites already setup in the network, and they are being affected by the other domain mapping plugin.

I'd like to know if I can replace the previous domain mapping plugin with yours, and if it may affect the current sites in any way.

Thank you.