Hello Tuber,
It sounds like your version of MAX might have gotten corrupted, since it is not showing up under the Traditional DAQ devices. Since your setup still works, I wouldn't worry about it. If it starts to become an issue in the future or if other problems occur, go to Add/Remove Programs in the Control Panel, uninstall MAX and NI-DAQ, and reinstall NI-DAQ. This will put a fresh version of MAX on your computer. Please let me know if you have any questions. Have a great day!
Marni S.
National Instruments