If an effect increases damage and then the speed and damage is switched, does the damage increase count for the new speed?

Is damage increases/decreases added independently....I mean if the printed damage is 3, I increase it by 2 to make it 5, my opponent reduces it by 1 making it 4, then I enhance with powerful +6 making it 10, then my opponent plays rejection making it 1, all increases now are made with damage being 1 right?

Any further modifications would be based off of the damage being 1.

Thanks Antigoth, knew I could count on you, but what about the speed switch?

If you are attacking with a 5 damage attack, and give it +2 damage, it's damage is 7.

If you switch the speed and the damage, you swap the 7 with whatever the speed is.

Those are now your numbers to modify for each value.