-A lot a srpms in backport_testing are also in updates_testing or in update, so they need to be remove:
boinc-client-6.10.58-1.mga1.src.rpm
docbook2x-0.8.8-6.mga1.src.rpm
extremetuxracer-0.5-0.beta.6.mga1.src.rpm
foremost-1.5.7-3.mga1.src.rpm		 
gpodder-2.15-2.1.mga1.src.rpm		 
kchmviewer-5.2-0.1.mga1.src.rpm
mozilla-thunderbird-3.1.12-1.mga1.src.rpm
perl-LWP-Protocol-https-6.20.0-0.1.mga1.src.rpm	
pymad-0.6-5.mga1.src.rpm		 
python-eyed3-0.6.17-4.mga1.src.rpm	
python-mygpoclient-1.5-3.mga1.src.rpm	
python-pymtp-0.0.4-7.mga1.src.rpm

-bug 1825, 2287 maybe too (as in mdv 2010.2)
frei0r-1.3-0.1.mga1.src.rpm 
gavl-1.2.0-0.1.mga1.src.rpm 		 
libgdither-0.6-0.1.mga1.src.rpm	
mlt-0.7.2-1.1.mga1.src.rpm  
openshot-1.3.1-1.1.mga1.src.rpm	

-bug 2070, missing to move to backport:
perl-Linux-Smaps-0.90.0-1.mga1.src.rpm

-no bug report:
python-firebirdsql-0.4.2-1.mga1.src.rpm
redmine-1.2.0-3.mga1.src.rpm 
ruby-fastthread-1.0.7-5.mga1.src.rpm
ruby-rack-1.1.2-1.mga1.src.rpm
rubygem-passenger-2.2.9-2.mga1.src.rpm
smartmontools-5.41-1.mga1.src.rpm

I will mail the packager of 4st group.
Thanks