@Des ***
you don't even know how lucky you were ๐ฎ They had NO obligation to let you in on a re-entry permit from the old extension (whether it had expired or not it was tied to the OLD extension and you were on a new one)
They could have told you that you get in free stamp 60 days and start all over from scratch with a new Non-O, then they year 2 months later.
You really lucked out getting stamped in on that new extension with the old re-entry permit. ๐