Images duplicating in Media Library

When I insert a new image into my Storyline project, Storyline is duplicating the image in the Media Library. This is preventing me from updating the image if I make a change to the image (yes, it is still in the exact same location on my hard drive as it was originally).

See attached screenshot. You can see the same image in the list twice (no, the image has not been resized, etc.) When I click on one of the two images, you can see that no information is available about the image on the right panel. If I click the other image with the same name in the list, I do see the information, but it won't allow me to update the image.