What do I need to know about the "weird" Galaxy S Vibrant emergency call handling?

Vibrant support was dropped from CyanogenMod after 7.1 (Gingerbread) due to [issues](http://pocketnow.com/android/cyanogenmod-drops-vibrant-911-support-its-achilles-heel) with [failed 911 calls](http://forum.cyanogenmod.com/topic/32208-911-doesnt-work-on-vibrant-but-works-on-other-galaxy-s-models/) . I flashed 7.1 a bit before this was made known, and have since reverted to my stock-based ROM. This is obviously a bit concerning and I have a few remaining questions: - Did flashing CM damage anything? (I.e., will emergency calls work now that I'm on a different ROM?) - Can this happen with stock-based ROMs? - Was it all emergency calls, or just 911? - Is it related to Gingerbread? - Has it been fixed in CM? I've seen a few things both ways.