No, NT's IRO from your thread isn't a standalone download in the Qhimm Catalog. It's directly unpacked and unedited into the Gameplay category as its own option.
I believe this is a case of the Red XIII field models by WolfMan. In older catalogs, they had Reunion patches and separate options to choose. Those options disabled mods altering the flevel because those WolfMan models needed its own patch + Reunion flevels to function. I removed Reunion and those model options from Catalog 3.0, but I forgot to look at the compatibility tags that were attached to them. This might have caused a shift in ID values in those compatibility tags, now pointing to a different Red XIII model that is disabling mods with an incompatible flevel. New Threat was one of those. This is obviously an honest mistake and will be fixed.
Too much hearsay going on, so I please ask that no one assume anything was done with Catalog 3.0 without talking to me about it first. Keep the discussions here about the 7th Heaven tool itself, and direct your questions about Catalogs to the 7th Heaven forums where Strife and I have our Catalog threads, or alternatively on Discord.