I forgot one additional "rule" that the reservation agent told me as she handed back the unused voucher!!!

It was dated Nov. 29th and I assumed it was good for 1 year from date off issue (standard practice) Oh, no!

"Now remember," she said. "This must be used and the flight completed by the expiration date on the original voucher."

"Is that date on here?" I asked. Oh, no!

"You must remember the date yourself," she said.

Kindly she pulled out the original voucher and I wrote the October date on my (daughter's) new voucher.

Can you imagine! When I got home I read every tiny word on the voucher and there truly is NOTHING on it to tell you when it expires. I assume the original voucher number will key the agents to the expiration, but the consumer will have no clue. BTW, AA reissues an unused voucher and extends its life for another year. They even let you book up to the expiration date and fly later.

Way to go, Delta!