Ok, I had to read this a couple times before I figured out what you are saying CW.
Colony ship is built at planet A. You want to send it to colonize planet B, but not with population from planet A. You want it to stop along the way at planet C and pick up the poplation because planet C has the population that breathes planet B's aptmosphere. What you are saying is you are clicking in this order,
1. Remote load, (Planet C)
2. Colonize, (Planet B)
The result of theese two orders would be:
Move to planet C
Load Population
Load Population
Move to planet B
Colonize
And you are saying the two Load Pop orders are causing a problem? Have I got this right so far?
If so, try instead one of the following order sequences:
Either,
1. Move to Planet C (not remote load)
2. Colonize (Planet B)
or
1. Remote load (Planet C)
2. Move to Planet B (not colonize)
3. Colonize (Planet B)
Do I get the job? Do you pay for relocation expenses? Does your empire have a good 401K?
Geo