When we wrote Sword Worlds I got permission to ignore the version of 5FW from BtC. I confined my timeline to events that concerned the Sword Worlds, but I assume the rest of BtC's version is equally decanonized.
I didn't realize the change point was as far back as somewhere between 1107 and 1110. The earliest difference I've detected is somewhere around 1115 or possibly 1114.
Hans
It will be interested to see if the MgT timeline turns out differently, their Zhodani module has an interesting motivation for the 5FW that radically changes things. Mind you, the MgT timeline appears frozen in place. I don't think they've advanced (meta-plot wise) at all.