Thanks for your query regarding SQL Data Generator.
Usually, refreshing the schema should get it up-to-date with the server, although depending on what generators you used on the fields in question, you may need to go and alter some settings there.
Does the problem still occur if you just start a *new* project with the updated schema rather than re-opening the old one? If not, then it sounds like something is stored in the project that doesn't get updated.
If you could send over a simple reproduction to email@example.com
, quoting F0052169 in the subject line then we can investigate in more detail and log a bug if necessary.