How to upgrade documentum d2 from 16.4 to 22.3 using upgrade toolkit provided in 22.3 package?

How to upgrade documentum d2 from 16.4 to 22.3 using upgrade toolkit for config provided in 22.3 package?
I followed the documentation provided in guide but its not working properly, config is not merging properly. Is direct upgrade from 16,4 to 22.3 is possible?