How to downgrade software version?

Hi!

Could you shared or let me know how to downgrade software version in same platform?
For example, now version is AVEVA Everything3D Design Mk1.1.0.34, and I'm prefer to use version Mk1.1.0.19.

I've already tried by replaced install fix 19 but finally it has remain with same version 34.

Thank for all.

With Pdms I used this command, to uninstall fix 33:
Msiexec /uninstall Plant12.1.SP2.33.msp /package Plant12.12.msi /quit