Files Not Appearing In Asset Panel

I recently was sent a .pak file from a friend. I made sure I had the correct version (4.21) and opened the files in UModel to export them. However, UModel can’t export .umap files, so I had to save the files as .uasset and .umap files. I then moved the files to the content folder of my project. Unfortunately, the files do not appear in the asset panel, only most (not all) of the folders. As previously mentioned, the files can be viewed in UModel, so why don’t the files show up in the asset panel and how do I make it so they do?