This is worth repeating
Belarus' National Selections History
EuroFest 2003/04: Aleksandra & Konstantin - Moj Galilej
-> in ESC 2004: Aleksandra & Konstantin - My Galileo (same song, English version).
EuroFest 2004/05: Angelica Argurbash - Boys and Girls
-> in ESC 2005: Angelica Argurbash - Love Me Tonight (new song).
EuroFest 2006: Polina Smolova enters the song "Sait odinochestva" in the semi-final, changes in the final to the new entry "Mama".
-> in ESC 2006: Polina Smolova - Mum (I think this is the same version as in the NF of Eurofest 2006, just the title is changed to more 'correct' English).
EuroFest 2007: Dimitry Koldun enters the song "Angel mechty" in semi-final, but changes to the whole new song "Work Your Magic" in the NF.
-> in ESC 2007: Dimity Koldun - Work Your Magic
EuroFest 2008: Ruslan Alekhno - Hasta la vista (original disco-ish version).
-> in ESC 2008: Ruslan Alekhno - Hasta la vista (revamped rockier version).
EuroFest 2009: Petr Elfimov - Eyes that Never Lie <- no changes made for ESC.
Musical Court 2010: Artjom Mihalenko - Don't Play in Love
-> the runner-up entry "Far Away" by the group 3+2 (including Artjom Mihalenko) gets picked instead.
-> in ESC 2010: 3+2 - Butterflies (another new song for ESC).
Internal selection 2011: Anastasia Vinnikova - Born in Byelorussia. This song changes lyrics and becomes "I Am Belarussian" however...
-> in ESC 2011: Anastasia Vinnikova - I Love Belarus (a whole new song after the previous one apparently broke the rules).
EuroFest 2012: Alyona Lanskaya - All My Life
-> in ESC 2012: Litesound - We are the Heroes (Alyona and her entry gets disqualified after alleged vote-rigging, a slightly revamped version of the runner-up entry by Litesound enters ESC instead).
Update
EuroFest 2012/2013: Alyona Lanskaya - Rhythm of Love
-> in ESC 2013: Alyona Lanskaya - Solayoh (new song).
2014: TBA