Multiple Choice Custom Field Not saved on creation of new contribution
Could you try to reproduce this bug on the 4.4 Demo Site by creating a similar custom field/contribution setup? If it's a bug there then you could report it to the LTS team (although noncritical bug fixes for older versions don't get high priority).

You could also try to reproduce it on the 4.6 Demp Site which would be a good idea for 2 reasons:


If it is still a bug in 4.6 it will get more attention.
If it is not still a bug in 4.6 you could solve your problem by upgrading :)