Who never had this problem when you dragged a new song into osu to map it and when you tried to upload it then osu told you that "This beatmap you're trying to submit isn't owned by you!"?
You may ask how this happens. The problem is most of the times the name of the song file. osu will use the song file's name as beatmap folder name. If your song file starts with numbers then the name of the beatmap folder will also start with numbers which is causing problems because the numbers at the start of a beatmap folder name indicates its BeatmapSetID, so osu will overwrite this number into the .osu files as BeatmapSetID every time. And this happens quite often, too often.
My Feature Request: Instead of using the name of the song file as beatmap folder name, use something else like "new beatmap" or whatever or at least the numbers should be removed automatically, so you won't have to deal with this annoying problem in the first place.
You may ask how this happens. The problem is most of the times the name of the song file. osu will use the song file's name as beatmap folder name. If your song file starts with numbers then the name of the beatmap folder will also start with numbers which is causing problems because the numbers at the start of a beatmap folder name indicates its BeatmapSetID, so osu will overwrite this number into the .osu files as BeatmapSetID every time. And this happens quite often, too often.
My Feature Request: Instead of using the name of the song file as beatmap folder name, use something else like "new beatmap" or whatever or at least the numbers should be removed automatically, so you won't have to deal with this annoying problem in the first place.