I have come across an odd problem that maybe some of you have found an answer for.
In doing this from my main GT5 game save to a secondary account, my main game save now shows many cars (like 15 or so) as being up for borrow when I view it from the secondary one even though in my main account I have taken all cars off borrow (no cars showing in the online tab of my garage). This has happened because I tend to modify a car (painting, overhaul, etc) before i put it up for borrow on the main account, and then I restore the main account game save after I sponge it to the secondary account. This tends to gets things out of sync and I end up with my main account showing many cars for borrow (way more than the normally allowed 6 maximum).
Anyone know how to fix this and remove the cars showing up for borrow? I haven't found a way to re-sync it. Its not really a big problem now but at some point the list could get really big and I won't be able to easily find the car I am actually trying to sponge.