Hi
First of all thanks BG for creating such a wonderful game which I can't stop playing and thanks to Ruges also for an excellent tutorial on wiki for creating units, but my question isn't about units because after an exhausting search for two hours i finally found this post
http://www.bgforums.com/forums/viewtopic.php?f=48&t=16762 as it explain how to add units to a game in progress, but it give me the thought that as it is necessary to create a cache or edit the scenario file to put new units in game, is it also necessary to do these things after modifying aiparams.csv, and if it is please explain how to do it by editing a scenario file, sorry for my bad english, thanks.