Races and different publishers take on them

[Asandir]

So here's my next issue, as the title says.

For the sake of the argument just going to look at one race, but is certainly applicable to all.

Dwarves. Go to the PRD and there is all the standard stuff for Paizo's take on the Dwarf. Now, start adding non Paizo material. Guess what, they may have a slightly different take on the Dwarf or extra information about the race.

So now I have:

Characters for Pathfinder
Races
Dwarves

Characters for Great City Campaign Setting
Races
Dwarves

Thoughts on not building them twice? or more? What I don't want is to take some content from the content market (eventually) v1. I add my stuff and then 6 months later there is a V2. Does that overwrite what I did and lose all that or do we know or am I just crazy about not wanting multiple racial values for the "same" race?

thanks.