this should of course be handled in the driver not in a command used for multiple drivers
That was my suggestion, to have a parameter in to handle the behavior.

if it is not a requirement but a personal choice it can simply be handled in code by uppercasing the value
It's not a requirement, DB2 can handle mixed cases. But there are advantages if you use uppercase.
I know I can change the source code. but if you are migrating an existing DF app, with hundred of tables , it's a dam huge LOT of work to change everything manually.
What's the problem by having an option in the Convert wizard to ask how the user wants the naming convention to be managed ?
1. Keep as Is
2. convert to Uppercase
3. convert to lowercase