Société Générale is believed to have traded about $30 million of Conseco's bank debt in the 84 1/2-85 range last week with Deutsche Bank and J.P. Morgan each reportedly picking up $15 million of the name. Traders said that the paper fell from the 85-86 level where it had been trading two weeks ago. Activity on the name comes as Angelo Gordon &Co. announced it is suing the company in response to an amendment the company made to its credit agreement. A spokesman at SG declined to comment. Officials at Angelo Gordon declined to comment.