ntrlsur

I am in the process of moving from a custom designed acars and webpage to phpvms. I was able to get most of the information moved over but it seems that I can't import multiple routes with the same flight number. An Example would be SWA 2536 which is PIT to MDW continuing to SLC. What is the right way to get this information imported? When I try a CSV mass import the routes get overwritten and the last one in the csv file is what sticks..