Received a PM asking for a reply.
I know that they do periodically update the question pool. I would assume that they also periodically adjust the scoring scale to match changes that have occurred on the real test, but I don't know for sure. I would guess that there have been at least minor changes to the pool of questions in 2 years, and possibly minor changes to the scoring scale as well. I would expect any scoring scale changes to be relatively minor, though.
One thing you could check: did you write down the precise numbers of the subscores you received? For the version you have, is it showing just your scaled subscores, or is it also showing you percentiles? If it's showing both, take a look at this chart to see whether the numbers are still the same:
https://www.mba.com/mba/TheGMAT/GMATScor ... gMeans.htm
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Stacey Koprince
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Manhattan GMAT
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