I think the only upgrade needed is from 11.2 -> 11.3 then from 11.3 through 11.6 no upgrade is needed, ie pdms 11.6 can open versions 11.3 and upwards. Search for Aveva product bulletin on how to upgrade.
I think the only upgrade needed is from 11.2 -> 11.3 then from 11.3 through 11.6 no upgrade is needed, ie pdms 11.6 can open versions 11.3 and upwards. Search for Aveva product bulletin on how to upgrade.