I have Zencart 1.2.6 and it's been running great for 3 years on a low volume store. Just recently I stopped receiving the middle CC numbers in order conformations. I still get the conformation, just no numbers.
The outside numbers are still getting stored in the DB. I don't really know much about Zencart (haven't touched it since I set it up). I didn't find any logs on my webserver except a UPS shipping log.
Thanks for your help,