Mod Merge still required?

Quick question - In the current version of BG:EE with SoD installed, is the Mod Merge utility that alters the chitin.key file still required to install Weidu mods? What about BG2:EE?

Will the upcoming update to IWD:EE also break Weidu mods and require the altered chitin.key? If so, is there a way to refuse the update or keep my IWD:EE 1.4?

If I can get a copy of BG:EE 1.3 working, will Weidu work on that as it always did before?

Thank you for your help.