Ok so I have found the answer to my problem, thanks to a guy over on Autodesk Area

Hi, if you're importing FBX go to the Import Options window and change the File type at the bottom to FBX and under the File Type Specific Options on the right side change the File content to Add. This might be set to Add and Update. I attached a pic of what I'm talking about.

https://forums.autodesk.com/t5/maya-f...n/td-p/5732618