This was a world that was previously modded, but I have been using for building sans mods. I have had no difficulties with getting other BPs to transfer to other saves. The only game changes that I made to the save between the previous imports and these was: console commands to: set daylight always=true & long building and reaching. Also, I dropped the BPs directly into the folder, instead of in the main area first, and then sort them later. (Not sure if this is related).
Result: A normal transfer

I opened another game, and all the new BPs were missing:

After this, I manually imported the BP strings into the Global area in that particular save.
I tried another (different) save game, (tested just to see), the new BPs were DOUBLED!
