How can Support help our Clients Integrate RE and FE?

I just finished spending 2 days at BBU in The Raiser's Edge Essentials I, which I felt was a great way to get some knowledge of another product under my belt to fill in space between the burger and fries I had for lunch.  Ultimately though, the goal is to improve Product Support's responsiveness, and ability to support clients who choose to integrate The Financial Edge and The Raiser's Edge. 

I still have quite a few more classes to go until I would say I "know" RE, but this project can't get started soon enough.  A problem we face in Support is that RE and FE users and Support Analysts have different vocabularies (vocabularii ?).  On top of that, because the 2 programs serve such different, but advanced functions in their own purpose it is no suprise that questions come up when working between the 2 products.

So, with the end goal of this project being a way for support to provide better "support" for the integration of FE and RE I would like to tap the knowledge of those integrated users...what hurdles did/does your organization face with integrating these 2 products?  From a procedural standpoint, does your accounting staff have nightmares over what the development office is sending to your database?  What are the questions you would like to be able to call Support and have someone know the answer to when it comes to your integration?

The floor then ladies and gents, is all yours...