Problems With Invasion Tactics Not Being Limited By Technology

Maybe it's just me, but in AP, I have all available Invasion methods appearing available whenever I invade with my transports, yet, in the invasion data file, the technology requirement field is filled in with a legit technology needed to be discovered prior to that invasion method being made available. I have used GC Writer to check things, and all is ok. I am using tech and imp mods with no other difficulties other than this. The invasion files are in the Mod/Data/Invasion folder as required. Any ideas? Or is this a bug?

In particular, I want the invasion method "Assimilation" (from a mod I got from this site) to not appear until the player has discovered the "Assimilation" technology. All seems proper at this point...