Setting manual priorities should NOT effect normal priorities and vise versa.

[erdrik]

I needed to switch a bunch of colonists to new tasks and figured the quickest way to do so was to switch to normal priorities and just swiftly uncheck or check the priorities I needed. But after the task was done and I went back to manual priorities, everything was set to match the temporary changes I had made in the normal priorities.

Now I have to spent even more time fixing it.
Please make the Normal and Manual Priorities independent of each other so that changing one does not change the other.

EDIT: this occurred in the 1.0 unstable version