I can understand why you are frustrated, but is it actually IE you should be frustrated with? From the forum thread I think you refer (Lyxor EuroStoxx 50 (MSED) ETF Price) it seems IE didn’t get given notice of the change, but once aware they did give the link to the notice from Amundi which states that the TER will be that of the receiving fund (although Amundi didn’t state that figure was 0.15% and over double that of the transferring fund!). Also in that notice Amundi gave the (bland) reason for the change “As part of the ongoing review of the product range competitiveness and client interest assessment”. So I’d be frustrated if my TER doubled, but that’s surely down to Amundi?