I wrote Graco to ask about this. They said there are 2 dates stamped on it. One is for booster mode and 1 is for harness mode. The csr said they didn't make changes to the harness portion.
Did they happen to tell you where the 2nd expiration stamp was located? I've looked all over and only see 2 stamps--the "Do not use this restraint pass the date of manufacture" and "Do not use without instructions."
I have a hard time getting correct info from graco csrs. This last time I called and asked specific questions a few times over "just to make sure" because the lady changed her answers. In the end, was "go by the date or dates on the bottom of the seat". If there's one date, then that's what you go by. If there are two, then you go by those.
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