I’ve upgraded the Balance of Power duplicate detection formula to use Match History links, which (unlike match durations) are truly unique. This has enabled me to remove the “match duration” field from the submission form, hopefully saving people some time. Because the formula requires a precisely formatted URL, I’ve added a check into the submission form; it will not allow submission of matches without a proper, complete Match History URL beginning with “http://matchhistory”.
Some people have reported problems with this. I believe those problems have now been resolved. However, if you do notice any issues when submitting Intermission match results, please let me know.