3ds max issue. Floating line


I have a model almost fully UV unwrapped when i find this line inside of RIZOMUV and 3DS max UVM modifier and the Modeling edit mode.

It is not selectable so i cant delete it and if you look closely the object surrounding it are all black lines which are all selectable. What has happened and how do i fix it?

even when i restore the faces its shows over top the actual edge…
Yes i welded everything to 0.01 and even welded inside RIZOMUV and in 3DS max UVM modifier