Duplicated skinpacks appear

I have my own .mcpack skinpack, and sometimes i find something wrong in my skinpack and I fix it. So I went to import my updated skinpack to minecraft and it uploaded the wrong file (the-non-updated one), thought I clicked the correct one. I also tried uploading the correct file several times, but the ‘'duplicated pack’' message didn’t appear, and the old skinpack duplicated inside the dressing room.