Can not upload GoPro footage from SD card to iMovies

Recently I have had an issue importing GoPro video to iMovies. I click on import and I can see my SD card and the footage. I click import and it goes into project media. I can see the footage and edit but its like it never leaves the SD card. When Im finished and try to share the project it says "This item cannot be shared while it is still referencing media on the camera" Its like it can read the SD carb but not upload it. I don't get the blue circle that shows it upload status when adding video to my project. I have made about a dozen movies in the past and uploaded them to Youtube so Im not sure what Im messed up.