The blacklisting code is a bit of a mess - if anyone wants to tackle this then look at _updateVersionsAndStatus() inside lib/lp/registry/model/distroseriesdifference.py
(see also bug 785657 which talks about fixing the mess)
The blacklisting code is a bit of a mess - if anyone wants to tackle this then look at _updateVersions AndStatus( ) inside lib/lp/ registry/ model/distroser iesdifference. py
(see also bug 785657 which talks about fixing the mess)