You don't have any conflicts.
GSX for MSFS has been specifically designed to work alongside the P3D version, because they share a lot of files. And when the files are different, they are not interfering with each other, because the installer knows how to configure both simulators to let them use only the correct files for each one.
I don't understand your reference to the "XBOX". The FSDT installation is always done inside an "Addon Manager" folder, that by default is set to "C:\Program Manager (x86)\Addon Manager". You are offered to select a different one when you first install an FSDT product so, do you mean you did that, and decided to install the FSDT main folder inside something related to the XBOX ? How, exactly ?
Last thing, please stop writing in all caps. It's considered to be rude, because it equals to shouting, and it's hard to read nonetheless.
