that doesnt look like a custom format issue, it seems normal.
the file you already have is 1080p (2nd quality), what was downloaded is 720p (6th quality), its not an upgrade according to your quality list so wont be imported by default.
not sure why sonarr would have grabbed it in the first place though, not unless the indexer job name has 1080p in it but the file inside it is actually 720p, or it was grabbed first and just took longer than the 1080p version to download?
can you screenshot the episode history? that should show when it grabbed things, and why
the upgrade until custom format score being set to 10000 is practically useless though as you only negatively score the ones you do have, the max is only ever going to be 0. you may as well put it back to 0 and set the upgrade until value to the max quality you want. ie is web-1080p or bluray-1080p where you really want to stop.
