If you make the changes in the template itself, then they will be effective for all activities generated thereafter.
I believe that the problem is the center beam cars, and here is how to fix it. First, copy and save the SWLACTNCRSD1_Template.csv file in the ACTIVITIES folder in the NCR route folder to a safe place. Using the full version of ConBuilder, you would want to substitute bn_bflat4, bn_bflat5, bn_bflat10, and/or bn_bflat11 for every instance of ttzx_cw3, ttzx_cw4, ttzx_cw5, and ttzx_cw6. Also, substitute bn_bflat1 for every instance of ttzx_cw1. Then you will need to open the SWLACTNCRSD1_Template.csv file in the ACTIVITIES folder in the NCR route folder. Make sure that the car type for bn_bflat4, bn_bflat5, bn_bflat10, and bn_bflat11 is L, and that the car type for bn_bflat1 is LMT. If you mess up this file,you can always go back to the saved original copy which you made in the first step.
Joe has created an update for this route that fixes some switches that couldn't be operated manually, and restores a tunnel. This update however "breaks" some of the paths in the Activity Generator template for this route.
I have today posted fixed paths, to be used ONLY with this update, and I have also posted Joe's update. You can get both on the Templates page of this site under North Coast Route.
Cheers,
Steve
It would be interesting to add 44 tonners at those locations. I think that with MSTSbin you could even figure out how to switch to those locos, continue the local work, and then switch back to the GP's. This would require a modification of the template to place loose consists of 44 tonners.
Cool!