Codea 3.3 (264) Export Zipped Project - exports old code

I have been diligently backing up my project by using Export Zipped Project. I needed a version from earlier in the day and when extracted it was a file from a few days ago, not the one I backed up earlier in the day. I always save before running. Time stamp on the archive was the current date and the file in the archive was dated three days ago. This is really weird!