I've poked around the forums a bit and used the search function, but I still haven't found an answer to my query. I apologize if this has been addressed elsewhere. Is there a range of Block/Item ID's that is exempt from FTB? That is to say ID's that will never be used by any/all FTB modpacks. I ask this because as an Admin for a server there are mods we would like to add to our server, but we don't want to run into conflicts down the road with possibly world breaking implications. As it stands, we have disabled/removed a couple of mods we don't want, so we have a few ID's that we can be fairly sure will be fine for the future. However, there will likely be a greater need for ID's that don't conflict down the road than we will be able to recycle from disabled/removed mods.