I can't guarantee this but I recall doing several similar upgrades and did not run into key issues. I do recall hearing from users at MOTM regarding possible issues with keys for users who went from standard/advanced to premium. As best I can tell that's not presently happening or if it is that people aren't posting about it.
There could be other reasons why I didn't run into an issue including the length of time it took to upgrade -- if you have a 1-year start to finish then you could run into an issue vs a 3-month start to finish upgrade.
I also don't think the key change from std to advanced has as much of an impact provided you aren't trying to re-install standard with advanced keys ( which then insists you install whatever the keys allow ).
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Wayne Schulz - Schulz Consulting - 860-516-8990
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