I’d say get the original footage. Change it through mpegstreamclip to 29.97.
Make a new sequence drop in your newly conformed footage. And go re-edit. drop your audio and should be insync.
Copy the reference proxi sequence and paste the old sequence proxi files into that new sequence for an easier re-edit.
Once you satisfied erase all old proxi reference clips from the new sequence
And you shall be done with the edit.
Hope this did not confuse too much.
digital cinematography, montage, directing