I find this a problem for the forum I manage. I would suggest that at the point we split the idea, the voters are sent a notification of the split and can re-assign their votes. That would solve the voting concern.
In regards to changing the idea, I don't feel this is necessarily a problem, since we can already 'edit ideas'. What we need, is to split an idea which may refer to multiple features, which, according to our roadmaps may have differing priorities. We don't want to lose anything in the suggestions/ideas users are putting forward, but in the same vane, we don't want to have an idea status changed to 'completed' when only half the idea has been delivered.
I find this a problem for the forum I manage. I would suggest that at the point we split the idea, the voters are sent a notification of the split and can re-assign their votes. That would solve the voting concern.
In regards to changing the idea, I don't feel this is necessarily a problem, since we can already 'edit ideas'. What we need, is to split an idea which may refer to multiple features, which, according to our roadmaps may have differing priorities. We don't want to lose anything in the suggestions/ideas users are putting forward, but in the same vane, we don't want to have an idea status changed to 'completed' when only half the idea has been delivered.