Qgiv has three integrations for Raiser's Edge: Importacular, ImportOmatic, and NXT.
For documentation about the Raiser's Edge integration via Importacular, please visit the following link:
Integrate Qgiv with Raiser's Edge
Zeidman Development built the integration. All documentation can be found on their site.
If you're looking for information about the ImportOmatic integration, check out this article.
If you're looking for information about the Raiser's Edge NXT integration, check out this article.