During May and July 2009 the Munro Society re-surveyed several mountains that are known to be close to the 3,000 ft figure to determine their height more accurately. On 10 September 2009 the society announced that the mountain Sgùrr nan Ceannaichean, south of Glen Carron, had a height of . Therefore, the Scottish Mountaineering Club removed the Munro status of Sgùrr nan Ceannaichean and this mountain is now a Corbett. In a Summer 2011 height survey by The Munro Society, Beinn a' Chlaidheimh was found to be and thus short of the Munro mark. On 6 September 2012, the Scottish Mountaineering Club demoted it from Munro to Corbett status. On 26 August 2020, the SMC confirmed that Beinn a' Chroin West Top at 938m was deleted as a Munro Top and Beinn a' Chroin East Top became the new Munro Top at 940.1m. The summit height of Beinn a' Chroin was also changed to 941.4m.