Alpha is wrong when importing plates into composure.

I am using composure to try and add a media plate to my scene. When I import the plate however, it defaults the alpha channel down to 0.000031 (as seen in the picture). I have tried creating an alpha of the plate and adding back in using unreal but it still defaults back down to 0.000031. Anyone know whats going on? and is there a fix?

(I am keying it in nuke and exporting it as an EXR sequence into unreal)