I would like to know if its possible if I could get a complete record of credits sent from me to Merr Sonn. Specifically from January 2007 to June 2007.
Well, you can get the last three weeks' worth of records yourself so you only need through May. But as I mentioned on IRC, from what I have seen, ordinarily only specific individual events are looked up, since acquiring a complete record of transactions over time is significantly more time consuming. So you may be out of luck until a better system for retrieving archived events is implemented.
I actually wrote myself a script to do such a thing last week. It's all quite crude, just a raw dump of the data in plain text. It won't work for more than a few thousand credit transactions, any more than that and it'll push the server further than 'm comfortable with. So aye, individual transactions are still very much preferred.