I believe there is no purging of any data in the financial modules of Exact Macola ES. I was recently looking at what it would take develop a purge, or I would call it a compress for Macola ES.
You could not completely purge the data, remember there is no AR File, there is the GBKMUT (Generel Ledger Data) and your Bank Transaction File. These two files basically make up your AP and AR aging. Purge the data for AR or AP purposes and you just changed your financial data.
I do think this is a real long term issue! But then again its just space ? Things become interesting when you try to plan for a 200gig +++ Macola Database, you start to talk about some real Hourse Power need.