In Israel, if Isru Chag of Pesach is on Shabbat, when do people reacquire their chametz that they sold on Pesach? Do they acquire it retroactively after the holiday is over, OR do they not acquire it until after Shabbat is over?
For example this year (2012, 5772):
The last day of Pesach is on a Friday, and Isru Chag (the day after the holiday) is on Shabbat.
I know of this question: If the last day of Passover is Friday, may I eat chametz on the Shabbat right after?, but my question here involves chametz that is one's own house and was sold over Pesach.