Doonbeg had to survive a massive scare before beating Wolfe Tones and securing their senior status.
The 18 times champions had a 1-12 to 1-7 win over the Shannon men, but had to come from behind to do it.
A Darragh Leahy goal had the Tones 1-5 to 1-3 ahead at the break, but the Magpies were much stronger in the seconf period, and outscored their opponents by 0-9 to 0-4 to take the win.
Wolfe Tones are now just 60 minutes away from an immediate return to the intermediate ranks.
Eire Óg have guaranteed their senior status after also surviving a scare against Shannon Gaels to win by 1-15 to 0-10
The Townies trailed at the break by 0-5 to 0-4, but a second half goal from Eimhin Courtney proved the crucial score.
It's the second year in a row that Shannon Gaels will contest the relegation decider.
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In the intermediate football championship, Kilfenora beat Clarecastle to see them top Group 1, with the Magpies in second place. Both sides were already through to the semi finals.
Kildysart beat Eire Óg to guarantee their place in next years championship, with the Town side now facing a relegation playoff.
