ah, ok now i understand Tripwire after all these years even in the glider days didn't really understand the tripwire except it was a safety precaution.
Yes, warden was completely rewritten (hence Warden 2), which calls for a new tripwire as well. But the date won't be updated because it hasnt actually been triggered yet. Tripwire is only there to detect sudden changes with warden that honorbuddy/gatherbuddy is not protected against at that time. Once it's tripped, all GB/HB is (should be) killed and you'll be unable to use HB/GB until tripwire says it's safe.
No it was not completely rewritten, go ask Apoc.