Hello @Michael Tian,
Going from 5.2 (dated 2014) to 9.x is a big jump. So... directly? No.
As you may imagine, in the [more than] 6 years that separate these versions, a lot of changes happened.
Two problems I can foresee right now:
- several steps were deprecated/eliminated: you'll have to check every ktr/kjb individually;
- plugins that you currently use may not work on the newest version: you'll have to see if there're newer versions or search for alternatives
Such transition will greatly depend on your scenario.
Regards,
Sérgio Ribeiro
Porto - Portugal