@deltaassist responded to my request change CDG-IAD on AF W-class that I purchased before the new "policy" to an AMS-IAD on KL (SWUs are available), unfortunately the KL flight fare difference is $900 more:
"At this time the problem hasn't be resolved with SWU's being available to be used on Air France. ^
We will allow a change to KLM without the penalty, however the fare difference will apply. ^"