Thanks for the info! Now I have a new concern. I saw that the FAQs for the new transferable flight credits include the following:

What happens if I am unable to use a flight credit or transferable flight credit by the expiration date?
Once a flight credit or transferable flight credit has expired, the funds are no longer available.

Does this mean they're doing away with the LUV voucher option? That would really bite for those of us who've had credits we haven't been able to convert yet because they haven't expired (I have a bunch with a 5/22 date) but also couldn't take advantage of the new transfer option. I hope that if this reflects a change in policy they will at least grandfather those with pre-5/17 credits who would not have been able to use the transfer option.