I've created a test repository on GitLab and pushed a .mp4 (500MB) file to that repository. After that, I tried to migrate this repository to Git LFS and run the force push command. But when I check the usage quotas on Gitlab, both "LFS storage" and "Repository" have 500MB usage, so the total usage of project is 1GB.

Why after migrating success, the "Repository" usage is not reduced?