How Can I Save the Changes I Make to javaex.ini?

This functionality is supported only if you are using the Classic Agent.

When you uninstall Silk Test Classic, the file javaex.ini is backed up as javaex.bak in the extend subdirectory of your install location. Any changes you made to javaex.ini can be reinstated by copying them from javaex.bak and pasting them into the new javaex.ini that is created when you reinstall Silk Test Classic.