This could make for interesting reading! I am attempting to sort the board orders for the AMCA 4NCL teams and am struggling to deal with this issue.
I like to put the players in order of playing strength but the new ECF ratings (if converted) do not allow me to do this in many cases.
Conversely, there are juniors who have stupidly low FIDE ratings and their ECF rating might actually be nearer the truth!