Here are the results, I am happy to say it is fix. Let me say after I did the set-up I quitted my game even restarted my computer (was not necessary but I did it anyway), I check the objects.package file again it was not modify.
Family 1 while the whole test was going did not stop playing with the car (saved them that way)
Family 2 Got a chance card, came back with promotion and got paid, I saved return to lot check the memory and all is there.
Family 3 Also got paid when return from work and got a promotion, all memories where there.
I just quit my game, check the objects.package file and it is not modify so I turn it back to be a read-only file.
Now can I put my chicken outfit back please