Leyton Orient's season was finally brought to a close on Tuesday evening with League Two clubs voting by an overwhelming majority to formally end the campaign, meaning promotion for Swindon, Crewe and Plymouth.
The teams voted in favour of concluding on a points-per-game basis earlier in the day.
Swindon have been confirmed as champions with Crewe and Plymouth also promoted from the second and third places.
Cheltenham, Exeter, Colchester and Northampton will contest the play-offs with the first games on June 18.
The bottom team is still to be decided with Stevenage currently on the foot of the table but second-bottom Macclesfield facing a potential points deduction, while relegation will only be ratified if the National League can give assurances that its competition will go ahead.
Forest Green chairman Dale Vince, who has been a strong advocate of completing the 2019-20 season, said on Twitter that his club were the only ones who voted to play on.
"The question of whether to play out our season or quit has just been voted on," he wrote. "Only one vote in favour of playing on (FGR) - surprised by that. So L2 season is done. Shame, but we'll focus on the new one, whenever that comes and in whatever shape it take."
Vince told the PA news agency: "I think it's been a good day for football. The vote this morning was a good common sense outcome which respects the integrity of the game as far as that's possible when you don't finish the season.
"And then the vote this afternoon was not unexpected. The vote to end League Two prematurely, we knew that was coming.
"We voted to play on but we were a lone voice sadly. So we at least have some certainty now, we know what's happening, and we can focus on the new season which I hope may start in September."
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