On the noob's paradise thread there was a reply tha solved this :faceplam: :
"Okay just making sure if you are okay sir.
Since fbi installer is injected into H&S It uses the same title id as Health and safety, So when installing a cia of fbi, it installes as a new app title id and is kinda a duplicate but updated. It is easier to have it this way as updates can simply be done with the update option on the fbi menu, if you want to update the fbi injected into the H&S you would manually need to repeat the injection process with each new update which takes longer and requires a pc each time unlike the prefer method of update.
You are also free to keep both if you wish. But only use the injected one in emergencies, for example you lose the FBI installer app on the sd card. Since the injected is stored on system nand it won't be effected by the sd card."
