Jolt was killed in a comic that takes place 2 years before DOTM, Elita-1 was killed too 2 years earlier in a comic books, Arcee and Chromia survived the comics but considering theres a 2 years gap they could've died in that gap. Skids and Mudflap are in the film, but in alt mode only, they were killed by Sentinel Prime off screen. Movie timeline - Transformers Wiki Elita-One (Movie) - Transformers Wiki Jolt (ROTF) - Transformers Wiki Skids (ROTF) - Transformers Wiki Mudflap (ROTF) - Transformers Wiki