As we know, a large chunk of the 84 cast were taken offline by the mindwashed Optimus Prime in Prime Time!. However, in the UK continuity, they along with most other 84 cars were kept alive and continued appearing. But by Funeral for a Friend!, both Prowl and Ironhide are shown to be offline (Or at least badly injured), despite both appearing just issues ago. This is of course due to Friend being a US publication. So apart from that obvious explanation, what do you think happened to them between Resurrection! (Their last appearance) and Funeral for a Friend!? Considering the Combaticons are introduced without much fanfare in the issue following Ressurection!, could Megatron have taken them on a test run that resulted in Prowl and Ironhide (Along with possibly others) being badly damaged, prompting the Protectobots' construction to be sped up?