Buried in the "...\Common Files\M***\mech\text\licensing\mech" folder, there is a file named "feature.dat". In one of the releases, those license feature names were not matching up with the previous Mechanica feature names we had purchased. You can compare the names against those Mechanica/Simulate licenses found by querying the license server using the command line:
lmutil lmstat -c port#@licenseservername -a