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Thread: Miles & More eVoucher upgrade Questions [merged Q&A]
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Old Aug 21, 2012 | 8:52 am
  #50  
G_G
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Join Date: May 2006
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Originally Posted by TRAVELSIG
I have never attempted an upgrade from economy to business however from D to F works fine as long as it is not an A388 (i.e. there usually is space and it does work).
Do you know if it works from C to F on SQ ? I can't find any information on M&M website.
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