People have been exporting files to OA with Amazing Charts for some time although I understand it takes some tweaking for some files. I think it is normal for a company to start by making one clearing house - my Medisoft PM supports one that they sell (ie make a cut of the profit) and that is normal. The fact that AC has made it possible to export and use elsewhere is the exception not the rule.
I see no reason why Ver 7 would take away the export function using 837 fields.