Well, its too bad there isn't an internet archive of transformers knowledge that one could just look up at their leisure. Like some kind of online encyclopedia. Yep. Too bad that's purely in the realm of fiction.
There is, yes. Having been curious about some of IDW2 stuff before, though, and come up with nothing and stubs at best didn't exactly fill me with confidence that I'd find anything - and if I did, the idea of potentially sifting through who knows how many articles until I found the right one didn't appeal when I could use a Transformers discussion forum to discuss Transformers.
Sorry? I answered why the comic reading portion of the fandom was ok with it and that part slipped my mind. Hardly worth getting angry about.
The context is that Megatron went missing when the Ark crashed on Earth, with only his arm left in the wreckage. Meanwhile Optimus lost an arm in a fight with Skywarp. So Ratchet bolted Megs' arm onto him.
Hope that helps, now have a Snickers ffs.
I'll admit I woke up more than a bit crabby and got out of line there, it was just frustrating to ask "hey what's the context of this thing" and get "the thing works in the context of the story" as an answer - but I did add the extra stuff on there, too, so that's on me.