PD. Sort this game out.

[Cad-Monkey79]

I have randomly lost about for days of data including some expensive cars I have traded for.

So instead of wasting your time programming trade limits. FIX THE BUGS

 

[Khaddar]

You've "randomly lost" them? Want to tell us what you mean by that? Based purely on what you've told us so far it sounds more like you've copied the wrong backup file after duping...