Yes I understand, and even for me it was a "hard" decision to make. But the idea here is to allow lenders to have a precise history of their loans to recalculate interests if they want. So the first step was to have loans that would keep the same amount all the time. So now, the system never increment or decrease a loan, it always add a new one or close and open a new smaller one. I know this means more data to manage, and for big traders like you it means more rows to read, but unfortunately lenders have to be able to really know what was going on with their funds so we have no choice. I hope this is ok.

Especially now that the lending time is less important (when you do margin trading, the system don't look at lending time any more since the position never expires.