BS”D
Joseph, no, not if the store credit is given for returned merchandise. In that case, it is essentially money due to the purchaser and cannot expire because it is reimbursement for cash spent at the store.
However, if it is a prize or incentive for which no money changed hands, I fully understand why it would be limited. I would not give unrestricted credits as a prize for a Chinese auction, for instance, because all I can probably legally get is my tax deduction if the scrip is actually redeemed and some not very effective advertising. In this day and age I cannot assume that I am even getting a repeat customer from the scrip.
And a regular change in ownership is one thing whereas a bankruptcy purchase is another thing altogether. Again, law and halacha differ regarding a bankruptcy and this is way past my knowledge of either.
Now, that poses another question. Assuming this is credit due to the original purchaser because of a return, and there was no bankruptcy, and the change of ownership occurred during the period of validity of that scrip – there is a serious problem for the new owner if the scrip was counted and adjusted for as a liability at purchase.