Help with modding floor logo

I've been adding some team logos. Most of them work, but everytime I try to import an image over a generic floor logo (I. E. The logos that show the team name on the floor while creating a stadium instead of saying, moda center or staples center) it immediately reverts back to the original image. I can open the file I saved into 'moddimg' with explorer. It shows the image I want. When I load the same file with editor, through the generated list, it always reverted back. Any help would be appreciated. Thanks.

I wasn't in the right file. To anyone reading this, the logo files are in "2y" I. E. Logo_arena_name_000....