The retcon was stupid.
Varloum died long before 20BBY in EU, he was assassinated by Palpatine.
Sifo Dyas was personally killed by Dooku in EU.
Havn't u heard EU is no more, no more than *Ledgens' and those aren't always true are they ...
Disney reformation is in the works, any reference to the EU not sanctioned by Disney is just hear say you know, Something we all have to deal with, or we see a all new ball game of hatred, following the wake of the Great Disney Purge.