I currently use Google Voice and have it ring my T-Mobile number, but if I don't pick it up in time, my regular T-Mobile/iPhone voicemail greeting plays instead of the greeting I recorded in Google Voice. Voicemails end up in my phone's inbox instead of the Google Voice inbox. This is a problem because I use my Google Voice number as my business line and I don't want customers hearing my personal voicemail greeting.

This used to work flawlessly and I don't recall making any changes. (I have GV Mobile + installed BTW).

Anybody else run into this problem?